Originally Posted by chrashz
Get the sensei, at low dpi (best for cs) it works an absolute treat. The mouse accel issue that some people cry about is far more prevalent at higher dpis, also this is more the fact the sensor is plain different rather than bad. Once you get used to it, it is a really nice mouse. A nice weight and feel too, slightly heavier which is nice for precise aiming. Also, you can customise the **** out of it.
CPI has nothing to do with the acceleration problem of the A9500 sensor. The word you're looking for is sensitivity as in centimeters(or inches)/360º, and the lower the sensitivity (the more cm you need for a 360º turn), the more noticeable the acceleration is.
Besides, weight is usually helpful to those with very high sensitivity since it prevents from making astronomically fast movements so the cursor goes smooth, and it's easier to stop dead on a spot. It doesn't help at all and it's not too good for low sensitvity users (although some people might manage to adapt and even like it).