if its strictly movies, i would say projector, there's just something i love about that setup. if your watchin tv's and stuff, i personally wouldnt want a projector, as it just doesn't work. as far as lcd vs plasma, all depends on price ranges and options available. i would think though that 30in to be to small, but that's me.
sorry wasn't that much great help lol
(pick 2 of the three only)