Sunfire Signature/SVS Subs and integration

Hello: I am trying to decide 1. What brand Sub to buy and 2.Whether to buy one or two? On several other forums SVS gets rave reviews and is almost always mentioned when someone asks for a sub recommendation. I notice that is not true on this froum. Does that mean most on this forum don't like SVS or that SVS enthusiasts are limited in number and don't hang around here? Or is there some other reason?

I was considering buying the M&K 350 but most people who have given me suggestions say the little Sunfire signature which costs about the same price will out perform the M&K .............for HT only purposes.I like the fact that the Sunfire is so small. If I buy one I can eventually buy two which I assume would make a much bigger impact on films. My only question is am I giving up performance for for size.My HT room is open to several other rooms and thus sub slam is important to me.

Finally, I keep reading that integration of the sub into your system is critical. Again I have heard that the M&K 350 easily integrates into the THX M&K speaker system. Is it any harder to get Sunfire or SVS integrated into such a THX system? Thank you for your time.