if we speak about 3ms in case of x748 and their laser cousins it is reaction time of buttons not the data flow, those mouses have configurable reaction time of buttons

all thought don't invest urs money in those mouses if u don't want to have negative acceleration, the laser are only good if u plan to play on really fast sensitivity on low they lose their traction far to quick, in led optics they have mounted adns-3080 but they have blowed something and it causes negative acceleration and quite low traction speed

mouses like:

adns-3060: ak-47, x760, x710fs, ikari optical, zowie e1 e2 (prediction 800cpi/1000cpi if comes to zowie) super high traction speed

adns-3688 deathadder 3G, salmosa, diamondback 3G (1800cpi very fast, DA have no prediction slamosa and diamondback have prediction on)

adns-3080: fatality 1010, mx518 rev1, diamondback (prediction 1600cpi quite fast)

intelli eye: WMO, IMO, IE 3.0 (400cpi no prediction, negative accel, fast enough)

m_yaw*sensitivity gives the outcome score of view-angles so u can set yaw/pitch to 1 and manipulate only by sensitivity

anything what suit u in a terms of accel or sensitivity will be good

i have adviced DA 3G to DarkAngel because he said me hes high sens player 8cm/turn and with DA 3G he becomes low sens player... 40cm/turn

about the revoltec, dunno haven't used it, but it seems it has not that good sensor

epsi, it is caused because of the dinput buffer overflow, anyway 500Hz is more stable than 1000Hz and it is better to use 500 instead 1000 anyway

with high CPI mouse and in_mouse -1 any mouse going to struggle from negative acceleration, thats why i am playing @ 400CPI and in_mouse -1

I have Razer Imperator @ 5600 DPI and 1ms. I'll try this tip to play with in_mouse -1, it mays solve some of my mouse problems.

If I can give you a tip, don't buy a Razer mouse I'm sad to say this but I bought my Razer Imperator three months ago and there is already problems like sometimes in Windows (7 Ultimate) the crosshair freeze for 20 seconds or in game I have now many laser drops. Razer mice have good performance but it doesnt last enough long time

To change to a good brand, I'll try Logitech, and the G500.