6. HTC HD2
Key features: 4.3-inch capacitive WVGA screen, 1 GHz Snapdragon processor, Windows Mobile 6.5 Professional OS, 3G/wi-fi, and 5MP camera
Complex says: With a screen that measures up to the EVO 4G, the HD2 is one of the more visually appealing smartphones on the unlocked market. Everything from messages to web videos look sharp in 480x800 resolution, while the onscreen keyboard and multitouch support come correct thanks in part to its large display. HTC Sense offers dope features that give the phone an up-to-date feel such as the tabbed toolbar that lets users launch and drag apps over 11 customizable tabs. And with leaked videos showing the device running on Windows Phone 7 OS, we're hoping the HD2 gets an upgrade in the near future.