The Halo+ is the brighter, battery-powered pick: a built-in battery for cord-free playtime and Harman Kardon speakers with real punch make it the better choice for backyard movie nights away from an outlet. The MoGo 4 is smaller, lighter and cheaper, with a 360-degree adjustable stand that aims at any wall or ceiling in seconds — the easier machine to grab and carry room to room. Cord-free outdoor use: Halo+. Light packing and quick indoor setup: MoGo 4.