So I am trying to decide between the different GB iphone options (16, 32, 64) for the 4S. I have lots of songs (19GB) on my Mac but don't want all of it on my phone. I assume I can filter with the new wireless syncing with the Cloud so just a few playlists are on the phone...correct? Reason is, I think I only need the 16GB iphone, but if I can't filter what music is synced to the phone wirelessly, I will obviously need a larger GB phone option. Any other reason I should get more GB (I dont keep movies, etc that will take up memory). This seems like a no brainer, but just want to make sure I get the right GB option. Thanks!