Do you use this feature in iTunes when syncing to iPad? I have it turned on but it takes FOREVER on the first sync. Especially when you are syncing 17gb of music (which turns into 9.7gb). The more you sync, the better value this is working if you don't mind the lower quality (which I can't really hear the difference). I was thinking about natively converting everything to it, but then I would have duplicates and have to figure out which one I need to delete. Seems like a lot of work. What do you do?