Apple iPod Shuffle (third generation, 4GB, black)

Pros: Small size

Cons: 1. Sound malfunctions when you perspire.
2. Controls are hard to use while in motion, like running or riding a bike.
3. Sometimes the selection of playlists is less that easy with the in-line control.
4. Earbuds come out of my ears while exercising.

Summary: I wouldn't buy this again until it comes with better headphones. I am very disappointed.