hi, i got a lachesis in RMA, the store said i can change it also with a different model mouse. i found the lachesis shape not that good for my hand (but maybe is becouse i have used it for a little time and maybe i need more time to get used to it). i finished some fps(for example crysis) and it is ok for normal game, but with unreal 3 it made me feel like that i would have been better with the old cheap Trust mouse. any suggestion? thanks!