yeh are mice are pretty good i actually use myn on 2000 and it works well but im not sure about the shape, although im use to it now...and the razer are the most expensive by a long way but quite like em, although you cant really tell if u will like a mouse or not until you hold it. Btw have you felt the difference in weight between a g5 and mx 518, its like the g5 is made of lead