Well, I am not saying that iPod is bad but it is just not for me. I prefer Creative Zen Vision (30Gb) which can play MP3,WMA, WMA with Digital Rights Management and WAV.
Also I can download videos and music from any online store (thanks god I am not stuck with one only choice!) It also supports DIVX, XVID, AVI, MPEG-1/2/4-SP,WMV...