HTC Era 42
The HTC One X may be one of the best devices of 2012, but its limited availability makes it hard to reach a wide audience. AT&T and Sprint have their own versions of the device, and Verizon seems to have opted out of it. This leaves us with one carrier left, T-Mobile.
The latest rumors state that the HTC Era 42 may, in fact, be Magenta's version of the HTC One X. More specifically, it would be called the HTC One X+, and would come with a 720p screen and HSPA+42 compatibility. In terms of processing power, this bad boy could carry a 1.7 GHz Tegra 3 processor or a quad-core Snapdragon S4. Either one would be a win.