it doesn't seem to use a lot of cpu at all for gaming. I like the feel of the buttons overall. The have a nice firm click to it. The size is compact enough to whip around a bit ( though no to fast or it goes nuts). The accuracy is definitely better for my purposes in gaming. Sniping just got easier to do in tribes. My brother is just out right deadly with sniping now. It fun to see a mid air snipe when my brother is flying has well. I also like the feel part of the mouse (though it doesn't work in games). Took me a couple of days to get use to the various feedback from the mouse. You can adjust the strength of feedback and type of it to suit your tastse. I prefer the spongy setting with 3/4 intensity. Overall it does add a bit of depth to a boring desktop. I think I will have to order on for work now.
side note, that led blinking light pretty cool. Now where can I mount it on my case.