Just to throw in my two cents, I'm going for the G400 and there are three practical reasons for that:
- Price - the 400 is so much cheaper for the Sensei, since both are barebone mice bundles unless you are after the flashy lights of the Sensei, you are paying a lot more money for relatively little in the way of extras
- The ambidextrous design of the Sensei in my opinion actually hinders the mouse hugely. The extra buttons the Sensei has is a godsend, but if you grip your mouse like I do, I'll get some pictures added, you will be hitting the side buttons constantly. The plus side is that the buttons typically don't do anything in game unless you program them...which brings me onto my last point
- The software for the Sensei (I'm assuming is the same as the Xai) is a horrid piece of software, it is perfectly fine for customising the way the mouse responds, but in terms of setting up macros to actually use the extra buttons on your mouse, unless you want a key press e.g. 'g' for grenade or 'tab' to lock onto enemies forget about it. The macros can only be programmed for five seconds, so something that requires holding the button down e.g. push to talk, is out of the question.
Hope that helps. I'm in the middle of writing a review of the Xai, G500 and WMO so if you aren't buying immediately maybe that will help you.
Please keep in mind that while the second picture seemingly shows the mouse being palmed the contact points are my thumb and fingertips as seen in the first picture in addition to the back of my palm as opposed to the entire palm.Edited by 5nak3 - 4/15/12 at 12:00pm