Pros: Package is *green*. No useless plastic that will end up in the trash. It's lean and mean. Installation was ok; found out that it won't work on a docking station (Dell). I plugged it in the laptop's port directly and it worked like a charm. Feels very smooth. A bit small for my hand, and I don't have big hands, but I think it's part of the adaptation. I like the DPI selection...

Cons: None for now, except that it won't work on docking stations. I'll check the support website to see if there's a way to remedy that. No biggie though.