So far, I've narrowed my choices to two models, but I'm willing to add another if it compares: SVS PCi 25-31 for $549 USD + $100 USD shipping and brokerage + 7% tax Paradigm PW-2100 v.2 for $750 CDN ($500 US) + 15% tax These are the specs: The SVS is a 12" cylinder-style sub with a built-in 320W Class-D amplifier. It is tuned to 25 Hz. It has a THD+N of only 0.01%. Every review I've read has been glowing. The Paradigm is a 10" front-firing sub with a built-in 400W Class-D amp. It is tuned to 23 Hz. It has a THD+N of 0.1%. Reviews for this sub are equally good. Now, I think I'd snap up the SVS in a wink if it weren't for the cost of getting it over the border. I tend to put a nasty mind-job on myself, so that if I find something I like I'm not happy until I get it. If anything, at least try to convince me that the Paradigm will make me happy! The sub would be joining a Paradigm 5se mains, Paradigm ATOM rears, and an Angstrom A208 centre channel. All of these are hooked up to a Marantz SR5400 receiver. I think I would prefer music performance (stuff like Led Zeppelin, Rush and the Rolling Stones) over movies, but good performance in both would be nice. Oh, this will also be my first sub, and I want it to last! Thanks for the help.