Hello everyone, and welcome to another edition of my infamously ultra-biased, highly-and-mostly subjective, not-even-a-real-review mouse reviews! 
Today's supremely opinionated review will cover the Roccat Kova[+].
Review objectives:
A). Find a mouse that can replace the WMO mouse,
B). While also possessing more features than the WMO(like side buttons, for ex.).
*Disclaimer: this "ideal" mouse does not yet exist, afaik.
=========PROS===========
(+) Durability! - I'd say if there were a company that rivaled the "legendary" durability of the MX518, Roccat is on that list. I've had nothing but good things to say about Roccat's mice build quality(especially on the [+] models).
(+) 400/800 CPI - Allows you to double your pixel accuracy, from WMO's 400 CPI/DPI. Also has 1600/3200 CPI, but it seems these resolutions introduce jitter or something like that. (I haven't even tested 1600/3200 DPI; don't care for anything over 800)
(+) Lightweight - It feels slightly heavier than the WMO, but I am fine with any weight between WMO and MX518.
(+) Good clicks - Left/right buttons feel like a blend of the short & tactile IE3.0, and the more muddy & longer travel clicks of the WMO. The IE3.0 clicks are the fastest/easiest to spam, but I like the Kova[+]'s clicks just fine(and better than the WMO's, since the WMO will often perform double-clicks when you didn't mean to).
(+) Side buttons! - Kova[+] has 4; 2 per side, and WMO has none. The buttons could be easier to press(in a more ergonomic location, and protrude more, with non-angular buttons), but they are usable, at least. You can enable all 4 at once, also.
(+) Easy Scrolling - I like it. Feels solid enough, and not too easy. Feels like the WMO wheel with added weight, and no cheap-feeling or as much play. The scroll "clicks" feel like rubber, so there is practically no mechanical feeling "click" to it. It could be improved, though. Not perfect/ideal, but certainly usable and problem-free in my experience so far. (I don't use scrolling in games) The wheel is pretty huge and rubbery, too, so your finger will always find it.
(+) Software Sensitivity! - This seems to be a rarity, and is certainly one of the features I look for in a mouse. Besides Razer, Roccat is the only other software I can recall that allows you to change the DPI/CPI *AND* sensitivity, without affecting Windows sensitivity ratios(not 100% on the accuracy of this). This means you can double your CPI, then lower your sensitivity, to get a similar feel that you had at 400 CPI. Even the G400's Logitech Gaming Software does not have this option, afaik.
=========MIXED FEELINGS===========
(+/-) Shape - Well, compared to the WMO, the mouse doesn't fill your hand as much, and is lower to the ground, which lets you effectively control the mouse better, in my experience. The rear of the mouse doesn't bother me, but it is different. I find that, upon first grasping this mouse, it does not feel as comfortable as the WMO... but in-game, it feels better than the WMO.
(+/-) Coating - Harder rubber on top, softer rubber on the sides. It works, but could be better. I have applied electrical tape to my WMO and Kova[+] to solve both of their coating/grip problems.
(+/-) Cable - The cable/cord is not as thick & stupidly stiff as the WMO. It's still got lots of kinks and bends. It could be worse, could be better. Not a problem to me, though.
(+/-) Sensor - Accel & Prediction - Apparently, the sensor is the optical LED PixArt PAW3305DK-H, which seems to have jitter problems with 1600/3200 CPI possibly due to interpolation. There is no acceleration afaik, but there is slight prediction/correction/angle-snapping. I cannot stand to use sensors with accel(like Avago ADNS-9500), but interestingly the low amount of prediction doesn't get in my way enough for me to throw it out the window.
(+/-) Sensor - LOD - The lift-off distance is a bit higher than the WMO, but nowhere near those crazy Razer LOD's... The Roccat Kone[+] has a dual-sensor, and software that allows you to adjust the LOD, but the Kova[+] does not. Therefore, all you need to do, if you want to lower the LOD a bit more, is cover the sensor hole with something like electrical tape, until only about a 1/4" hole is left, where the sensor is still able to see through(duh!).
(+/-) Sensor - Placement - Alright, so the sensor isn't centered... so what. This doesn't seem to affect anything, for someone who does a lot of short movements with lots of mouse lifting.
=========CONS===========
(-) Scroll Button - The button is fairly hard to press. Not easy at all like the WMO's. There are harder buttons out there, though. Also, there is a little bit of wobble/play in the scrolling/clicking action, as if it will double-scroll, or roll when you try to click... but it hasn't caused me any problems. Easy buttons are better, though, which is why I dislike this one.
=========THE BOTTOM LINE===========
I would conclude that I have finally found an acceptable, usable, WMO-alternative/upgrade mouse. Even though this mouse has some prediction, and a funky shape, I would say my aim has improved over the WMO, mainly because of the increased control that the shape allows, and the doubled CPI. No, this is not that perfect, ideal mouse... but neither was the WMO. 
Today's supremely opinionated review will cover the Roccat Kova[+].
Review objectives:
A). Find a mouse that can replace the WMO mouse,
B). While also possessing more features than the WMO(like side buttons, for ex.).
*Disclaimer: this "ideal" mouse does not yet exist, afaik.
=========PROS===========
(+) Durability! - I'd say if there were a company that rivaled the "legendary" durability of the MX518, Roccat is on that list. I've had nothing but good things to say about Roccat's mice build quality(especially on the [+] models).
(+) 400/800 CPI - Allows you to double your pixel accuracy, from WMO's 400 CPI/DPI. Also has 1600/3200 CPI, but it seems these resolutions introduce jitter or something like that. (I haven't even tested 1600/3200 DPI; don't care for anything over 800)
(+) Lightweight - It feels slightly heavier than the WMO, but I am fine with any weight between WMO and MX518.
(+) Good clicks - Left/right buttons feel like a blend of the short & tactile IE3.0, and the more muddy & longer travel clicks of the WMO. The IE3.0 clicks are the fastest/easiest to spam, but I like the Kova[+]'s clicks just fine(and better than the WMO's, since the WMO will often perform double-clicks when you didn't mean to).
(+) Side buttons! - Kova[+] has 4; 2 per side, and WMO has none. The buttons could be easier to press(in a more ergonomic location, and protrude more, with non-angular buttons), but they are usable, at least. You can enable all 4 at once, also.
(+) Easy Scrolling - I like it. Feels solid enough, and not too easy. Feels like the WMO wheel with added weight, and no cheap-feeling or as much play. The scroll "clicks" feel like rubber, so there is practically no mechanical feeling "click" to it. It could be improved, though. Not perfect/ideal, but certainly usable and problem-free in my experience so far. (I don't use scrolling in games) The wheel is pretty huge and rubbery, too, so your finger will always find it.
(+) Software Sensitivity! - This seems to be a rarity, and is certainly one of the features I look for in a mouse. Besides Razer, Roccat is the only other software I can recall that allows you to change the DPI/CPI *AND* sensitivity, without affecting Windows sensitivity ratios(not 100% on the accuracy of this). This means you can double your CPI, then lower your sensitivity, to get a similar feel that you had at 400 CPI. Even the G400's Logitech Gaming Software does not have this option, afaik.
=========MIXED FEELINGS===========
(+/-) Shape - Well, compared to the WMO, the mouse doesn't fill your hand as much, and is lower to the ground, which lets you effectively control the mouse better, in my experience. The rear of the mouse doesn't bother me, but it is different. I find that, upon first grasping this mouse, it does not feel as comfortable as the WMO... but in-game, it feels better than the WMO.
(+/-) Coating - Harder rubber on top, softer rubber on the sides. It works, but could be better. I have applied electrical tape to my WMO and Kova[+] to solve both of their coating/grip problems.
(+/-) Cable - The cable/cord is not as thick & stupidly stiff as the WMO. It's still got lots of kinks and bends. It could be worse, could be better. Not a problem to me, though.
(+/-) Sensor - Accel & Prediction - Apparently, the sensor is the optical LED PixArt PAW3305DK-H, which seems to have jitter problems with 1600/3200 CPI possibly due to interpolation. There is no acceleration afaik, but there is slight prediction/correction/angle-snapping. I cannot stand to use sensors with accel(like Avago ADNS-9500), but interestingly the low amount of prediction doesn't get in my way enough for me to throw it out the window.
(+/-) Sensor - LOD - The lift-off distance is a bit higher than the WMO, but nowhere near those crazy Razer LOD's... The Roccat Kone[+] has a dual-sensor, and software that allows you to adjust the LOD, but the Kova[+] does not. Therefore, all you need to do, if you want to lower the LOD a bit more, is cover the sensor hole with something like electrical tape, until only about a 1/4" hole is left, where the sensor is still able to see through(duh!).
(+/-) Sensor - Placement - Alright, so the sensor isn't centered... so what. This doesn't seem to affect anything, for someone who does a lot of short movements with lots of mouse lifting.
=========CONS===========
(-) Scroll Button - The button is fairly hard to press. Not easy at all like the WMO's. There are harder buttons out there, though. Also, there is a little bit of wobble/play in the scrolling/clicking action, as if it will double-scroll, or roll when you try to click... but it hasn't caused me any problems. Easy buttons are better, though, which is why I dislike this one.
=========THE BOTTOM LINE===========
I would conclude that I have finally found an acceptable, usable, WMO-alternative/upgrade mouse.
Even though this mouse has some prediction, and a funky shape, I would say my aim has improved over the WMO, mainly because of the increased control that the shape allows, and the doubled CPI. No, this is not that perfect, ideal mouse... but neither was the WMO. 
I'm almost in love with it, except, like the Kinzu, the sides are still too short, and the sensor is skipping vertically on my red hien...and those cheap mousefeet and crappy scroll wheel! lol. Maybe I can hack parts from/to my Sensei to form a mostly fixed solution. Gosh, that Savu better be good.
