So after cancelling my preorder for the iPhone 6 Plus, waiting 13 hours in line, getting my hands on a 6 Plus... I was told I could not upgrade because AT&T apparently didn't get the memo that I'd cancelled my preorder. I walked out of the store empty handed and ready to blow a fuse. No phone and no preorder. However, at this point, what would be more productive: ordering one online or waiting for stock to show up?