$25 iTunes match + not having to carry anything around?
It's more for the 800GB of video. I'm a bit of an audiophile and the 700GB that's music is all ALAC and my home audio set up has me spoiled. I don't even own any mp3 files. If I try to listen to them I get distracted focusing on what I don't hear rather than what I do hear. If I weren't so picky I'd sign up in a heartbeat.