I had a boost mobile phone, but alot of things went wrong with it, so I'm looking to get a new phone. Ive been considering getting the HTC HD2 which is on the t-mobile company. The price is 99.99 w/ 2yr contract, and 499.99 full retail. I'm wondering do I have to pay the full price since I'll be new with t-mobile, or can I jus get the 2yr contract.