Buy This :P
The sensor in the rat 3 is excellent and is nearly flawless. It trumps the majority of the sensors out there that has higher dpi(btw higher dpi does not equal a bettor sensor, most high dpi sensors on the market now have a host of issues especially the philips twin eye sensor..
Has one of the best sensors in the market right now(ADNS 3090); Has a really good shape for a fingertip user like me; Works with pretty much every hand grip style though; The shape is customizable as the back portion can be pulled back but to do this a screw has to be taken off.
Quality: generally cyborg mice aren't built extremely well but it is decent imho; One of the side buttons has become less responsive and needs a lot of force to push; Mouse feet: They are thin and wear out very fast; Price: This mouse is really expensive.