I only stick with mp3 because it's easier to work with. If my entire collection was FLAC...I don't want to know how much space I would need. Whenever I rip or download purchased albums online (when I have a choice of format), I go with v0 encoding now. I really do like FLAC though. Maybe sometime in the future when I have loads of hard drive space, I'll re-rip all my albums and have FLAC instead.