Excellent review, Wayne.
All the superlatives mentioned in this (and most of the others I've read) of SVS's remarkable consumer products have got me sold. I'd very much like to give one of their models a try.
I'd be very curious as to how they stack up to my DIY sub (about an 8ft^3 15"er with big plate amp and a six inch flared port, not so pretty finish and no warranty on it's parts), but I'm honestly afraid that a company like SVS and their products could show my DIY monster up so badly that it wouldn't want to ever perform properly again

Then I'd be stuck with the task of hauling a 260 pound behemoth out of my theatre, which is in my basement.
Actually, I'd expect nothing less - SVS has been building these high value subwoofers for about as long as I've been into home theatre - I've built 1 (and a half). They
are the Bass Authority.