ReTrak Retractable Laser Mouse - Compact USB Wired Mouse with Ergonomic Design for Laptop, PC, Mac - Black (ETMOUSELB) | Perfect for Office Work, Travel & Home Use

For the price, this mouse is great! It's been almost 2 years and it still works perfectly. I definitely prefer it over other wireless mice I've had in the past. It's lightweight and fits my hand pretty well (I was looking for a smaller mouse because I've got small hands). What's also nice is that you can use it on pretty much any surface and it works well. The only issue I've have is that occasionally the cord-winder (if that's what it's called) gets tangled and I have to spend a minute or two fixing it, but other than that, it's great.**Update: It's been nearly 3 years and it finally stopped working, but I'm buying a replacement because I liked it so much. I was still hoping it'd last a bit longer, though.