Ordered one of these a few months back, I noticed in games it tracked a bit strange, It wasn't accurate. I got fed up and sprayed polish into the lenses , Don't know why but I did. This then made it not track at all , I pull this thing apart and put it back together again. And then the wire to the mouse was burning hot and the computer crashed until it was unplugged. I think about 20 more seconds and the plastic would have melted or got soft.
I noticed when I got thing out the box the wire was sliced , although the unit still worked. I also noticed when I took this apart the black wire inside only had half a casing and copper strips where dangling , Again this could be down till continual use or a faulty unit.
I believe this was just a faulty unit , Because of the price I am now buying another one and am going to have my fingers crossed.
Now , the mouse its self. The rubber sides are stuck on with glue as are the bottom bits. After a long session of gaming the glue can warm up and make the rubber slip (hardly noticeable) Overall comfort of this has stopped RSI I used to get in my hand. And has a great feel.
The dpi button can get in the way , although I have tried to use this in game and just failed. Its better just to blow the person apart instead of hitting that button and being steady.
Mouse wheel , This is great some reviews say its too hard. I use mouse3 for my VOIP shortcut and I can say its fine. It hasn't even worn down like a lot of other mice I have had. If you use a mouse wheel in a particular online game (Counter-Strike) I prefer this mouse wheel for Bunny hopping as it doesn't lock on scroll or it isn't just sloppy. Its just right.
I would recommend getting a mouse mat for this, I think this is just my personal preference however I don't feel like this moves very well on a white glossy desk. Again , My personal pref.
The plastic housing reflecting the LED and the mouse its self can get dirty easy. By this I mean grit or anything can get in their. It is a pain in the but when you get hair or something in it as it can go one of two ways. I would have thought there would have been a cover over it to stop it going physically inside. Now , as I have said uptop. This could have been my faulty unit. DO NOT spray liquid inside on it. It will just die.... Trust me.