I am about to cave into the dual sub peer pressure myself
Ditto that... already took the plunge. They are not two matching subs though... so we'll see how that goes.
Wait....dual centers, above and below the screen, is supposed to be the ideal setup per Alan. So, I guess it's time to go for an 8.2. Wait...Ian uses 4 subs, doesn't he? So, where the heck does this end?
Don't forget your A & B side surrounds, which makes it 10.4... If you're not completely surrounded by speakers, floor, walls, and ceiling, you're not done!