I recently bought a 25-31CS from a guy in Houston ($250 ). My bro-in-law was down there and picked it up for me, and I got it Tuesday. Unfortunately, work has been hectic, and I haven't even gotten to watch a whole movie (just bits and pieces ). Well, first about how it sounds (feels). Well, in a word, yikes! The only reason I got this sub was how cheaply I was able to pick it up. I really wanted a plus, but I figured this would satiate the upgrade bug until the PC+s come out. It would also, I figured, give me a rough idea of what to expect from the plus series (times 2, of course). It's really more like times 3 or more, though, since I'm pushing it with 150W. Anyway, I've listened probably within 5-10dB of reference, and I can't bottom this thing out (not that I want to). My living room is open to the breakfast area and kitchen. The living room/breakfast area is roughly 4800 cubic ft., and the kitchen has got to be another 1600+ cubic ft. I know it's far from ideal, but that's what you get with these open, airy houses these days . Anyway, to sum up, I'm really impressed with the build, sound, materials, etc... And the hilarious thing is I paid $250 for this thing . I know there are a lot of CS subs being sold so people can upgrade, and if you haven't taken the SVS plunge yet, I couldn't more highly recommend it. It's just too inexpensive not to experience right now. I also figure I could sell mine for a coupla hunny if I get a plus series. Unbelievable job Tom, Ron, and everyone else at SVS. My one question is how do I find out which incarnation of the 25-31CS this is? I know they've made several modification/improvements. I think the seller said they were 8-9 months old. Is there a way to check to see what, if any, (i.e. birch endcaps, better port, etc...) improvements my SVS has? If this is one of the originals, I just can't imagine what the plus subs will do. Steve P.S., Watched some of the Matrix tonight , and one thing that jumped out at me was when Keanu realizes he's "The One" and dispatches of that dude in the end. When he stretches and the you get that low worble (best word I could think of. Sorry) and the screen does that water stretching effect thing, that sounded awesome. It's not so much that it sounded better, but that I had never even really heard that part like it was supposed to be heard. Does anybody know how low that section goes? Anyway, thanks again for putting out such an awesome product, SVS. I hope I can actually give you guys some business directly come summertime.