First of all, I'm sorry to hear that you got mugged. That must've sucked. I hope you're fine. :(
I'm not personally familiar with those two devices... But according to this website (source) the atrix 2 has better hardware, while the arc s has official ICS. If I *had* to go with one of those two, I'd personally take the motorola. However, if I may make a recommendation, the HTC One S is probably also in that price range at the moment (sorry if I'm wrong), and it blows the other two out of the water. The only complaint people have with the One S is the pentile display, but bothers some a lot more than other. Besides that, I can't really help you much. Good luck with your phone selection.








