Whether the priority is price or platform, those using AT&T have a plethora of smartphones to choose from.  Two of those devices are the Sony Xperia ion and Nokia Lumia 900.  Both are available at AT&T now for $99.99, and offer 4G LTE connectivity.  The Xperia ion sports a 1.5 GHz dual-core Snapdragon S3 processor, 4.5-inch HD display, 12-megapixel shooter with 1080p HD video recording, a front-facing camera, 1,900 mAh battery, and Android 2.3 with Sony's Timescape UI.  The Lumia 900 offers a 1.4 GHz single-core processor, 4.3-inch Super AMOLED display with Nokia's ClearBlack technology, 8-megapixel shooter with 720p HD video recording, a 1,830 mAh battery, and Windows Phone 7.5.

Both are awesome smartphones, but only one can take home the gold medal.  Which one will it be?  Part 2 of 2.