Tomorrow I'm planning to buy new mouse and don't know which mouse I should buy, abyssus or mx518?

Hello, last time I bought new imo(intellimouse optical) and now I'm having problems with that, when I will make fast move mouse is freaking out, when I using it only on windows to browse internet it's ok but on ql when I was trying to make for example rocket jump it's impossible, with very fast move mouse is going out of control. I have question too, I have Windows 7 64bit and is there a chance that somebody will send me his hidusbf.sys file with 500hz mouse rate? or higher, I was trying to do this with usb mouse rate adjuster or something like that but without any progress, then I downloaded some file special for win7 64bit and my mouse rate changed to 150 I guess or 250.

"I'm looking for a very good video artist who is willing to create a Quake movie! Please contact me: cooller_at_mousesports_dot_com"

@cooller facebook fanpage

any volunteers ?:D