I'm a little confused. I thought that most of you (like me) bought the Aria because it was small and nimble. It fit in your pocket, like a phone should. The HTC One X is on the entire other end of the spectrum. In my mind, it's too large to be used as an every day phone. It's practically a small tablet. If you add in a case it becomes even larger.
Not to mention, most people can't even navigate the phone with their thumb. I have abnormally large hands, so I can drag my thumb from one corner of the screen to the other, but I've yet to see someone else complete that task themselves. Do you guys use two hands when using a cellphone?
Having said that, if this phone was the same size as a One S (if this phone was a One S), I'd buy it in an instant. Ideally, I'd like to find someone who will trade a One S for a One X, but I'll be hard pressed to find a T-Mobile user who wants to... (if you know of anyone, lemme know lol)