I'm looking for a sub for my viewing room: 15' wide, 17' deep, 9' high. From reading the forum, I've narrowed my choices to SVS or HSU, there are fanatics on both camps apparently. I have an extra 5.1 receiver (Sony STR-DA80ES), can I use it to drive a non-powered sub? I believe it's rated at somewhere around 80w/c. My budget is between $500-$800. Would it be better, in terms of setting up and quality of the thunderous bass, to get a powered sub? I haven't checked out Hsu's website yet, but on SVS' site, they have cylinders (powered and passive), and boxy subs. I really like the look of the cylinder sub. I like loud, window rattling thunderous bass. What do you guys recommend? Specifically which model from each brand that will suit my room? I don't mean to start another war between SVS and HSU. Thanks!