I teach sophomores in a University in a remote part of China. I want to show movies on weekends in a large room at night. I also want a projector to use in the classroom. The classroom is pretty bright, with no curtains, though I could cover most of the windows with black paper. I am intrigued with the pk 101 little 4 oz projector but I am afraid it is not bright enough for my needs. I am also just starting to learn about these gadgets. What are your suggestions? I am hoping to find a refurbished unit for $250 or so.