LTB Portable MP3/Video Player

[Snaz]

Any suggestions? There are lots of choices out there so I was wondering what people here use and like.

1. I want to be able to play video, standard formats without having to re-encode.
2. Around 2-4GB storage with additional SD slot.
3. MUST have an FM tuner.
4. Looking to spend ~$100.00. 2nd hand is ok.

Any suggestions welcomed. Thank you.