It has double click issues and some say it has lag. Most people prefer mionix 3200 to it, and even mionix 3200 isn't recommended that much.
I would go with the optical A4tech. It should be a solid mouse as long as you stay on 400 or 1600 DPI and avoid the interpolated ones.
The Kone+/Kova+ is an average mouse. It's quite expensive and the sensors are meh.
Also i saw an A4tech with avago adns-3080 (3200 dpi/cpi) i think it should be good.
This or the G400/MX518.
Or wait for another mouse with the avago 3090 (like the spawn).
Damn these mouse makers. Can't they all just make one perfect mouse with two of the best sensors: one optical and one laser (and to be able to commute between which one you want) with no acceleration and prediction, with spare feet, good build quality, fir for every grip style and that only costs 50$?