As much as I love my STF-1, if you're going to be doing almost all movies, you'll want to put more cash into your subwoofer than that. It works fine for me, but I listen to a lot more music than I watch movies. It does very well for movies in my 11x14 room, but sometimes I feel it's lacking in the low extension and pure SLAM that you can get from a larger unit. From all the stuff I've read and seen, the only way to go for a budget-class HT subwoofer is an SVS PB-10. It will go subsonic with ease in your room and should be able to provide you with slam as well. Sure, it's not as cute as the STF-1, but by golly it's got more oopmh to it (as it should, considering the price and size).