It’s easy enough to understand MG-850HD’s appeal relative to a traditional flat-screen TV. Unlike a TV set, this glossy black plastic-bodied unit weighs only 8.6 pounds and measures 13.4” by 11.5” by 4.6”, with a pop-out handle on the side that lets you carry the projector anywhere. You’ll need to have a clear path between the lens on the front and a wall or other projection surface; if so, MG-850HD can create an…