I am under a family plan for AT&T. We are in the midst of my two year contract and I am tired and bored with my Propel phone. I looked around for a good phone that is close to a sidekick. But none meet my expectations. I came across an "unlocked sidekick" and its the 2008 danger model. I want to buy this phone and use it for AT&T. What will be some pros and what will be some cons?