So, I got a pre-production version of the Scream One. It's not the final (lol) version, but I'll quote Jude here
But other than that the model is final production scream one minus a couple small details. The lights are different. Blue mousewheel and Rgb logo for indicating dpi change. And also it's not using 20m omrons.
above refers to it being sent in a Tournament Pro box. As I'm going on holiday tomorrow I don't have time to do a full review now. But I'll try to give my impressions here quickly.
First off: performance seems fine, I did the speed related accuracy variance test and it was very accurate, so on similar levels to other 3366 mice. Speed is also well above 5 m/s as was to be expected.
Now the sad part: Build quality on this unit is really sub par. Apparently it was used by someone before, so I got it second hand. That might have influenced it, but I think it's more of a tolerances issue. The left side where I place my thumb creaks with every move that I make because there is a gap somewhere between top and lower shell. That is really annoying, not only because I hear it but because I feel the shell give in. I could probably fix this with super glue, but that should really not be necessary.
Buttons overall are fine, no complaints here, response time is faster than current Logitech mice (~2-3ms).
Weight is 80g on my scale.Edited by Ino. - 7/24/16 at 6:00am