Aaron does a dogfight battle between the HTC One VX and the Nokia Lumia 820, two nice mid-range smartphones on AT&T.  The HTC One VX offers a 1.2 GHz dual-core Snapdragon S4 CPU, 4.5-inch qHD display, 5-megapixel camera with 1080p HD recording, 1,810 mAh battery, 4G LTE, and Android 4.0 with HTC Sense 4.  The Nokia Lumia 820 sports a 1.5 GHz dual-core Snapdragon S4 CPU, 4.3-inch WVGA display (480x800 pixels), 8-megapixel camera with 1080p HD recording, 1,650 mAh battery, 4G LTE, and Windows Phone 8.  They're both $49.99.  Which one will win?  Part 1 of 2.