The best projector I’ve tried is the new Viewsonic M2e with 1000 LED Lumens, Full HD, and Harman Kardon speakers. Even on an 18-foot screen, the images are crisp and bright, like watching a TV. I walked next to the screen and couldn’t see a pixel. Rather than using the audio from the projector, I connected an external speaker for a better sound but the Harman Kardon speakers should be plenty for most people. The M2e is a small portable projector but it does not run on a battery, you’ll need to plug it into electricity. It’s around $550.