iPhone 4 vs. Droid X: A Head-to-Head Comparison

Retina display! 8-megapixel camera! Video calls! HDMI port! The last few days have seen lots of shouting from proponents of the hot phones of the minute, the Apple iPhone 4 and Motorola Droid X. Which phone really delivers the best experience? We got our hands on both and tested them in eight categories: cost of ownership, storage, connection speeds, still and video image capture, display and resolution, operating system and multitasking, media playback and processor power.