First timer. I'm just about to start framing my basement. I'm doing an open concept HT/billiard/bar room. My local HT specialists mentioned that instead of building a REAL sub floor I could screw down 5/8 plywood directly over the concrete and this would improve the sound quality of my set up. Has anyone ever heard of this being recommended?:b Also, Build a screen vs. buy one. I would rather spend the 600 - 1000 dollars on speakers then on a screen. Can I really build a screen that performs as well as a purchased screen?