Current contract is up and wanting a new phone for the least $$$. Best Buy has a Black Friday deal for a free Razr Maxx with new contract. This particular Maxx has the GB system while the Maxx at the VZW store has ICS. Is there a significant difference for the $200 or is the Best Buy deal with GB a no brainer. I'm a casual user and for the most part I use the phone to communicate, e-mail and a few apps. Opinions please.