Hello, I'm looking for an inexpensive way to upgrade to DD & DTS. I've blown way too much money on my video and in doing so have neglected my audio. Current setup is a TEAC system purchased at Costco over 10 years ago. It works beautifully, and sounds fine as far as I'm concerned, but I don't have "real" surround sound. I'm willing to spend about $300 and don't mind buying used equipment. My only "must haves" are (1) Component video switching, (2) 100w/channel minimum, and (3) DD & DTS processing. (EDIT: Actually, I prefer to buy used if I can get a better system for the money. I've been looking on eBay but have no idea which brands & models to look for.) Lastly: I don't have experience with DD or DTS yet. Is a subwoofer a must when running one of these systems? Put it this way: I don't have a subwoofer now. My current setup puts out enough bass to rattle pictures off walls, and I'm happy with it. My concern is that when I go to a 5.1 system, all of the bass will be sent to the subwoofer output, which won't have anything connected to it. Is this the case? Can I simply configure the receiver to not use a subwoofer, and get the bass from the left & right front channels? Give me another year and I'll be looking to spend $5k on separates, but for now, I just need something to get by with. Thank you!