
First off she is pretty damn sexy. Mine is a kinda ekto neon green and the little Razer symbol pulsates which is pretty cool. Needless to say it looks pretty f*ckin good.....
When I first plugged it in (before I loaded the drivers) I noticed that it was EXTREMELY fast. Now I prefer a mouse that is really sensitive but this topped the charts. It was almost unuseable at this speed. This is one thing that I would say is a negative thing about it cuz it forces you to install the drivers.
The software that this thing came with had a ton of neat stuff that you could do. An example of this is that I turned down the sensitivity on the X axis down just a hair to improve aim. I also customised the sensitivity both ingame and out. The right side buttons are used to change sensivity ingame, but I didnt find that too usefull as I have a key bound to change the sensivity anyways and the buttons are hard to reach comfortably being right handed. IF you were left handed, I think that this is the only solution for you as to the best of my knowledge logitech doesnt make a left handed version of their mx seris mice.
The thing has 2 features that I think every gaming mouse should have. The first of which is it has teflon feet on it. (it even comes with spare feet) Take a look at your mouse feet right now and youll prolly find that it really isnt that slick and has some brown dirt like stuff around it. Teflon makes this thing glide on my desk like no other. Another feature that I think is key is that it is always on. Most optical/lazer mice turn off after just a few seconds of not moving, taking priceless milliseconds to respond once you move it.
The biggest thing that I was worried about was that the side buttons would be in an awkward position as I am used to a logitech mx510 (which i liked a lot till it crapped out). The side buttons took almost no time to get used to as they are in pretty much the same spot.
Negative things about it include the pricetag of $80 in store, cept I found a deal for $40 shipped. I dont think it is worth 80 bucks but for $40 definetly. Another negative is that the software/drivers use some resources. Nothing out of control but expect to lose a few mb ram and a few cpu cycles.
Overall this mouse is made pretty well and the precision is like no other mouse that I have ever used. I still have a lot of getting used to it and tweaking to do, but when I do it'll make me that much better I am sure about it. Id personally like to see a machined aluminum and or carbon fiber/titamium ultra-premium gaming mouse with replaceable microswitches in the future. I'd be willing to pay $150 or more for something with extreme quality like this. For now the Razer Copperhead is FTW!!

Anyone thinking of trying one of these and have questions about it, hit me up on Vent or via PM.