The Pro JBL's actually do get low and they can shake the hell out of things. Disneyland here in Anaheim, California that use to have a musical feature called Captain Eos that was a Michael Jackson attraction used at least 4 JBL 18" subs and the bass would shake the concrete columns outside. And as far as McIntosh not designed for sub duties, that am can basically handle anything you throw at them. Especially the mono block amps that are 1600w continuous @ 8 ohms with 3600w peak @ 8 ohms and have been rated down to .1 ohms! LG Clone Amps? I would not spend a dime on an amp that LG was behind to be totally honest as I hate everything that LG, I mean GOLDSTAR puts out. LG's HDTV flat panels have panel and power supply problems and there bluray players are horrible and one of the worst rated on the market. Is the guy with 8 18's have the 18's in the floor with dual quad woofers vented through dual floor vents? But the whole enclosure is built into the floor? I have yet to find any 8" subwoofer than can actually play deep, smooth and loud. Not a single solitary one! They just do not move enough air to do that in my honest opinion. I think one of the things many people have to watch out for is sub enclosures that are not properly reinforced and end up rattling. Will check out the brands you mentioned above! I have heard a SVS before and they have very good bass. Tannoy came highly recomended from someone I trust so that is one I am seriously looking at. I do want to save up and get my Denon Bluray player first and hopefully no later than May 4th. I hope to get alot of research done by May 4th so I can move on and start saving up for a good subwoofer. The sad part is I have never had a dedicated subwoofer in my A/V system.