Do all of them do it, or only some of them? And if so, which ones?

Basically, I'm learning a foreign language from CD, so I will need to pause the MP3, rewind it a few seconds, replay etc Any models that are better than others for this sort of thing?

I am currently considering:-

1. Muvo Slim 256m - about £109
2. YOYO 256MB Silver - about £50
3. Others?

I would prefer something with built in rechargable batteries but the YOYO seems to be selling fo too good a price.

But most importantly, any MP3 player needs to have that easily usable rewind/pause/replay facility.

Any suggestions?