Review on Perixx PERIMICE 520 Programmable Adjustable PM 520 11447 by Jami Harrison

Pros: Smooth ball movement, large smooth plastic ball bearings in the ball seat. The switches have a pleasantly positive feel when pressed and feel very solid. The horizontal scrolling toggle wheel is spot on and very responsive without being overly sensitive. The scroll wheel has positive clicks for each step. The shape of the main body is extremely comfortable and well thought out. The angled wedges feel nice and I've used both so far and found that each has its own merits. The driver and software can be easily obtained from the Perixx driver page linked in the manual. The software is highly customizable and can seamlessly co-exist with trackball software from other brands. The price is way lower than Logitech's latest trackball and honestly I have too many of their dead M570s to ever buy again. Small order and I am very grateful for it. Cons: It wasn't free. For some reason, Revane asks for clarity when reviewing it, and sadly I have to report that this trackball isn't even slightly transparent. ;) Conclusion: This is a keeper and I'll probably buy a few more for other machines I own and as backups just in case.