I'm using 900dpi on the 3.5g and 1150dpi on the FK. Just wondering if either of these mice aren't 100% correct at these dpis. By this i mean, some steelseries mice say 450dpi when in actual fact people have reported they are closer to 500dpi.

So does anyone know if either of the above are slightly off, and if so, what are they? It would help me a lot for dialling in 100% accurate sensitivity settings for my new FK, as i want identical mouse movement to the DA3.5.