Want a 4G LTE smartphone on AT&T, but the HTC Vivid and Samsung Galaxy S II Skyrocket don't do it for you?  Take a look at the LG Nitro HD, AT&T's newest high-speed powerhouse.  Available on December 4th for $249.99, it offers a 1.5 GHz dual-core Snapdragon processor, 4.5-inch IPS true HD 720p display, 8-megapixel camera with 1080p HD video recording, a front-facing camera, 1,830 mAh battery, and Android 2.3.5 with LG's custom user interface.  LG's Android skin isn't nearly as advanced as HTC or Samsung's, but the phone packs some nice features that makes it worth considering.