I bought one a few days ago and think its great. Nice big screen (2.8") 4Gb memory. Expansion slot for microSD cards. I think I've just found out that it only takes up to 2GB Micro SD cards, as my 4Gb one doesn't work in it.
And for less than 30 quid. I think it's a bargain. Even has a built in FM tuner for radio, that the picture doesn't show.