i gots a sansa clip zip, its just ok
its rly small and you can put rockbox on it, its best feature
rockbox is like alternative firmware for mp3 devices that lets you play more file types and stuff like flac
i recommend a rockbox supporting device for that reason alone
http://www.rockbox.org/anyway the clip zip i dont reommend overal cause the sound quality is just ok, as expected from a small device I suppose
worlds smallest doom player though
my personal favorite mp3 player ever was creative zen vision m, its old and bad now i imagine