Mouse (and Keyboard) Wiki

It's a japanese site, so most people will have to use google translate, still sometimes hard to read.

They have some nice info on the technical stuff (nothing new for me :D) and especially they have speed tests ("mousescore") of newer mice like G9x, MS X8 and Lachesis/Mamba.

Speed Test (English)

They also tested the button latency for many mice.

Mouse Latency (English)

PS: Surfing the site I got interested in those Dharmapoint mice cause I never have heard of that company. Remember that the Roccat Kone was originally anounced with a DCU (Distance Control Unit) which is now a TCU (imho a scam)?
Looks like those Dharmapoint mice have something like that.

Edit: found more