Originally debuted in our 2011 iPod/iPhone/iPad Buyers' Guide, Optoma's new Neo-i ($450) is the most powerful digital projector we've yet seen with iPod and iPhone compatibility. Designed as an all-in-one docking system with a DLP/LED projector on the front, stereo speakers inside, and capacitive controls on the back, Neo-i puts out a native 854 by 480-resolution picture bright enough to be semi-visible in a naturally illuminated room,…