After thinking about this for a long time, I just signed up for a TMO account. I decided to go with Magenta first just to see what it's like. The rep said I can easily call and change to Magenta Max later. Is this true? I was in a bit of a hurry as I have plans in NYC so I forgot to ask important questions like multi-line discount. Doh! The setup process was nice and simple. I just had to show my ID, they asked me which plan I want, and run a credit check on me. I think I was out of the store in less than 20 minutes. I am now officially a Mobile customer. Bye-bye AT&T for now...