Should the Nokia Lumia 900 be not up your street, and if 4G LTE connectivity isn't a feature you're particularly bothered about, the HTC TITAN is a highly rated Windows Phone and could well be the right one for you. We reviewed this beast of a handset (and it's successor), which is also backed by strong reviews from AT&T customers.
AT&T's web store is listing the Windows Phone for $0.01 (with 2-year contract), a good snatch for anyone interested. Featuring a massive 4.7" LCD screen, 16GB storage, 8MP camera, and a 1.5Ghz chip, the TITAN is capable of handling whatever you decide to throw at the device. While the penny sale is a very nice deal, unfortunately the off-contract is still stuck at $549.99.
Source: AT&T; thanks Rodney for the tip!