I like
www.pandora.com more but everyone has a different opinion on the two services. I seem to get music that more fits my tastes on pandora. I think its partially because it's hard to pin down my musical tastes and find it unlikely that people's reccomendations would be all too helpful in finding more music I'd like. When I start making stations I often exceed the 5 skipped songs an hour (f5 is your friend) but the refined stations I have now I can get thru hours without skipping anything. I'd like to see both of them increase their bitrate to lossless audio (i'd even pay for it).