Review on Perixx PERIMICE 520 Programmable Adjustable PM 520 11447 by Joe Jordan

Pros: Smooth ball movement, large smooth plastic ball bearings in the ball seat. The switches have a pleasantly positive feel at the touch of a button and feel very solid. The horizontal scrolling toggle wheel is spot on and very responsive without being overly sensitive. The scroll wheel has a positive click for each step. The shape of the main body is extremely comfortable and well designed. The angle wedges are a nice touch and I've used both so far and find 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 a lot lower than Logitech's latest trackball, and honestly I have too many of their dead M570s to ever buy them again. rder and I am very grateful for that. 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.