I like Spotify. I used to use Winamp, and still do occasionally, but I mostly stick to Spotify... It's not necessarily the player itself I like, though. I like that it'll post what I'm currently listening to on FB (and more so the fact that I can turn that feature off) instead of posting songs I was diggin' from youtube, like I used to more often. But the main reason I use it is because I've got these dedicated play/pause/<</>>/etc buttons on my keyboard that don't work with Winamp. And I don't like itunes because if feels really clunky and... bad. Plus, Spotify has that Gracenote thing that helps find out the names of songs, which I find pretty convenient sometimes when I don't feel like properly renaming things manually.