Sorry if somewhat repost... I am a current ATT customer that will be adding a new line when I buy a new IPhone. Which store would you recommend, ATT or Apple store for the shortest (QUICKEST) line? Originally I was thinking ATT, but the thought of waiting for everyone to open an account, get credit check (if not done before arriving), chosing number, etc. could be a long day. What is required to buy a phone at Apple store? The same thing, or can you just walk in and buy one like you buy a DVD? Thanks.