I wouldn't get this monitor again even if someone paid me. Please allow me to explain.
First, the uniformity of its brightness sucks and it affects everything, especially because I can't unsee it! You can't really see it very easily unless you're looking at an image that's very dark like some games and movies are (you can really see it if you just test it with the Blank screensaver). I know you'd want photos and I could try to borrow my mom's camera to take some, but it's super expensive and she strongly prefers that I don't touch it (and I don't really know how to use it anyway), so I'll try to explain it instead:
There's a distinct area that's brighter, and it begins sharply at about 1/3 the way down from the top (slightly further down than 1/3 the way actually - almost half the way down), and it pretty much fills most of the bottom half of the panel, but definitely not all of it - and also not evenly at all. So, the top 1/3 or top half (mostly) is distinctly darker and there's a relatively sharp line where the darker area begins - or where the brighter area begins, or where it ends. It's sorta like I'm looking at an outdoor photo with a very dark sky that has nothing in it and a slightly milky foreground of some kind. Also, the center of the panel is brighter than the rest, about 3-4 inches in a slightly oval shape.
Again, you can't really see any of this unless the entire panel is displaying something very dark. Even displaying nothing but white reveals this problem, but it requires a different way to explain it that I can't figure out. Regardless, I'm sick and tired of this monitor and I'm returning it even though it would cost me ~$40 to ship it back.
As you can imagine, this can be very distracting. The darkest-looking video game I have is Descent 1 and 2, and so this is especially noticeable and extremely distracting in the darkest parts of the maps where the panel is displaying a mostly-dark or mostly-black image. It's like there's a huge hole of darkness on the top 1/3 of this stupid panel with the bottom half or bottom third or whatever being much brighter. It's extremely irritating and completely unacceptable.
Now, before you say, "Oh that's just the viewing angle because it's a TN panel", no, that's not it at all! Like I said, there's a sharp line that divides the darker and lighter areas. Well, it's not razor-sharp, but it's VERY noticeable. I am trying to replace my Samsung 2253BW which is an 8-year old TN gaming monitor and it doesn't have this problem at all. Sure, its backlight uniformity isn't perfect either, but at least its lack of uniformity is very uniform with its uniformity and it's not even really noticeable at all. The top and bottom 1/5th or 1/6th (or smaller?) are the same brightness and both fade very nicely to the center, and the same is true for left and right sides. So, it's much better than this piece of junk called the Acer Predator XB241H. Or maybe I should just be angry at the panel manufacturer and not Acer? I don't know. It really pisses me off though because I paid $394.99 for this damn thing while the 2253BW cost me $299.99 in 2008 and is still better!
Then there's the location of the OSD indicator for the signal type. IT'S DEAD-CENTER! So, when I start Windows or launch a game or exit a game or change the refresh rate or do anything that forces the monitor to reestablish a connection, I get this stupid solid black OSD indicator rectangle that tells me what signal type I'm using and it's dead-center and thus it's right in the damn way. What the hell was Acer thinking?! It's extremely stupid AND I'M FRICKIN' SICK AND TIRED OF IT!!! I'm sorry, but I live at my computer, and so this is absolutely unacceptable. I'm sick and tired of seeing that stupid signal type indicator thing.
Then there's the super-bright (and obnoxious) blue power indicator LED. Good lord. Again, what was Acer thinking? While it's in its sleep mode, IT'S AMBER! It would've been better if they had chose Amber for when it's on and blue for when it's off. I hated it so much that I had to cover it up with electrical tape which means I half the power button and half the main menu button covered in tape which makes those buttons a little more difficult to operate. I hate this stupid monitor!
The only good things that I like about this monitor are stupid things like the nice non-glossy bezel, the fact that the buttons are located on the front and are very easy to press (and feel good to press), the stand has an awesome look to it (I love looking at it! The red parts are metal and I think they're anodized red and not painted), and I can raise and lower and tilt and swivel the monitor with ease. Of course, I also love the high refresh rate (I'm using 160Hz and loving it), G-SYNC, 1ms response time, the ability to have a super-bright brightness, and a very decent color accuracy right out of the box!
So, if the backlight uniformity weren't a problem and if it didn't have that stupid dead-center OSD signal indicator that comes up every damn time the monitor reestablishes a connection while I'm in Windows (as I described), then I would love this monitor because it's otherwise freakin' awesome. However, I think most of its awesomeness for me is due to the high refresh rate, G-SYNC and the 1ms response time. So, I'm going to return this stupid monitor and get better one that has the same features but without these 2-3 extremely-annoying problems. Except, finding such a monitor is proving to be quite difficult. I don't want a native resolution that's any higher than 1920x1080 because that's about the limit for my sig rig, and I definitely don't want 1920x1080 on a 27" panel because people say it doesn't look as nice as it does on a 24" panel. heh That's ok though because I need a monitor that's guaranteed to fit underneath my hutch (maximum size allowance of 18"x25", but I'd prefer to limit it to about 17"x24"). I absolutely depend on this hutch, so no I'm not getting rid of it. I can't!
I'm definitely not looking forward to going back to my 2253BW though because it doesn't have a high refresh rate and it doesn't have G-SYNC. Its brightness also sucks in comparison. I absolutely love setting the XB241H's brightness to about 65-75 for games and movies and full-screen YouTube videos. It's awesome and it's something I have always wanted. For everything else like just sitting here on OCN, I use about 10-20. To give you an idea of the brightness comparison, I'd say that a brightness of 25-35 is about equal to the 2253BW's brightness of 100. I guess that's the difference between an LED backlight and whatever the 2253BW has (cathode-ray tubes? I don't know).
Sigh. So yeah, I hate the XB241H's panel.