12" TITANIC MKIII SUBWOOFER KIT http://www.partsexpress.com/pe/showd...number=300-762 12" SVS PB12 http://www.svsubwoofers.com/subs_pb12_isd.htm 12" Adire Riva http://www.adireaudio.com/Merchant2/...gory_Code=1000 Trying to decide this bunch for my main theater. My goal is to keep things under $600, and obviously if I can find a great sub for less with close to the same quailty as a $600 sub I'd certainly look at it. Wondering which you think will provide, the deepest, and hopefully cleanest bass. I realize those two might not go together. I should also mention I do not want a 10" subwoofer, because I want the special sound I get with 12" Drivers. Also, if you feel there is another subwoofer I should throw into the list that would be great, it appears this $600 or lower market is a very LONG list, but hopefully I can find the gem. Thanks so much!