good:
- cheapish (bought it on best buy's website for $32)
- supposedly great sensor -- it "worked" and I never really tried testing it beyond that (don't remember LOD)
bad:
- braided cord
- logitech software
- the shape is stupid, although not terribly uncomfortable. why the hell would you put sharp angles on something people hold in their hands?
- mouse feet are absolutely atrocious. there are two tiny ones on the sides which started catching on my mousepad after ~30 minutes of use.