I don?t know if 1gb fits your needs, but the Creative Zen Nano is a good choice.
I have owned my Iaudio U2 for about a year. I have never really been that impressed with its sound quality. I have tried all of the equaizer settings, but it just never sounded right. I am now thinking about getting a new mp3 player. Sound quality is the most important to me. Smallness is also a factor too. It does not have to hold a lot, 2 gigs is plenty. What would you recomend?