Hey! I know there's a couple of threads about this, but I'm trying to decide for either iPhone 4 or HTC Desire HD, and I'm feeling that for Mac users the DHD is a bit of a drag. - HTC Sync is not mac-supported. So how do you mac-people sync the DHD? - iTunes doesn't support DHD, but I hear doubleTwist is a worthy replacement? (how does it work? Does it work alongside iTunes?) - This one's a bit off-topic, but I hear there's some problems with videos on the DHD. Audio-video sync problems?