I've been a Napster subscriber (£15 a month) for 8 years. I took out a premium subscription for Spotify a couple of days ago out of frustration with the relaunched apps from Rhapsody for Napster: the desktop software and the phone app aren't a patch on the legacy Napster versions and the tablet app for ICS, while gorgeous-looking, has issues with streaming.
So, I'm a prime catch for Spotify.
However, poor as the new Napster phone app is, it's still less buggy than the Spotify one, and the lovely Napster ICS tablet app does actually work as long as you save albums offline first. I struggled with the constantly offline issue for a while with the Spotify app on my tablet, listened patiently while the support rep assured me that 'all I had to do was reset my password', read all these posts and the diatribes on the Play Store user reviews, and have now cancelled my Premium subscription.
Sorry Spotify, you've dropped the ball.