I’m more of a ‘have the physical cd’ type of guy, but for the obscure one-track songs you want, you can’t go wrong with the $0.99/track.
The full album was the Thursday/Thrice live show in the Apple Store in CA, an iTunes exclusive.
And the player itself is my current player of choice. I’m not sure what it is about it, but I just like it. I even heard a rumor that an iTunes Listen-To plugin will be ready in a day or two… interesting.