Aaron reviews the T-Mobile myTouch 4G Slide, the newest addition to T-Mobile's myTouch lineup.  Specs include a 1.2 GHz dual-core Snapdragon processor, 3.7-inch Super LCD, 8-megapixel camera (which T-Mobile says is the best in the industry), front-facing shooter, and Android 2.3 with HTC's Sense 3.0.  It will be available on July 27 for $199.99 after mail-in rebate.  It's a nice upgrade for the myTouch line, but it's going up against other hot devices like the T-Mobile G2x and HTC Sensation 4G.  Can it hold its own?  We'll figure it out.  Part 1 of 2.