Ok, well, I basically got my sound system and tv, my whole home theater, when I moved once. We offered more for the house for all of it basically and somehow they agreed and it's been with us a couple years now even after another move. Anyway, I have this.. Front speakers Definitive Bipolar 2004 speakers w/ subwoofer built-in Center Channel: Definitive CLR 2300 Rear speakers: Bose 301 series Subwoofer: Yamaha YST-SW150 Subwoofer Receiver: Yamaha AV Receiver R-V1103 So, immediate question.. why is there an extra subwoofer with those built in ones also there. Well, like I said, we just got it from the people who previously lived in this house. They had it set up as such. Maybe they knew what they were doing or maybe they were stupid are just thought "buy expensive". Anyway, it's a couple years old this set and basically... I was kinda looking to DTS. First of all, what is the better subwoofer, the one built into the speakers or the seperate subwoofer? I was thinking sell the extra subwoofer, as well as my current receiver and that with some other money I have from selling my HD receiver I don't need, would be enough for a really good DTS receiver. I just noticed now though that this receiver I already have costs $800 still today, though I dont expect to sell it close to that. It's supposedly a top of the line dolby digital. I could sell this but I'd like to be assured my DTS receiver would be just as reliable and worth the upgrade. Any suggestions on what I should buy? Or any thoughts really. How's the rear speakers hold up too?