"Best smart phone I've ever owned."4.5 starson by Engageguy
Pros: Amazing battery life, beautiful form factor, great camera/video, Beats audio, 4G LTE s-p-e-e-d, syncs with Exchange Server with no middleware (goodbye Touchdown) and mail arrives on my phone before it arrives in Outlook, Dropbox sync
Cons: No optional SD card but not a showstopper (see Dropbox), no real keyboard
Summary: I was a corporate Blackberry user who converted to Android when our organization allowed it. I didn't go Apple because I philosophically object to closed, proprietary architecture. Tried Samsung IIs first but the battery life was terrible and it required Touchdown to sync properly with our Exchange Server. Now my company has several HTC One X users and the iPhone 3 and 4 users are jealous.