Summary: Pros: Sleek appearance, compact size, easily stored receiver extends battery life Cons: right and left buttons harder to actuate than a standard corded desktop mouse. Less than a year after purchasing, the right button switch failed.
Summary: Pros: Smooth motion response, glides well on surfaces, responds well on any hard, opaque surface; comfortable rubber grip. Cons: I wish the wireless signal was stronger for longer distances (i.e. presentations) Summary: Good mouse overall. I personally wish it wasn't quite so flat so more than just my finger tips would touch it but maybe that's just me. I noticed an interesting problem with it, which may again only bother me.
Summary: I hadn't seen this mentioned in the other reviews, but I had a problem with the orange one getting dirty on the sides. I've used it less than 2 weeks and where you hold it on the sides has darkened enough to be unsightly. The orange I paid more for no longer looks spiffy, but worn, grungy and dirty. The orange material is rubbery and there seems to be no way to clean it off. I hate to see what it would look like with 6 months of use.