Thanks for the reply D. Rowe. Just out of curiousity, can you tell me a bit about your the room you're using your system in?
My room is very small - roughly 12' x 12'. I bought the Def Tech system after originally planning on just adding a subwoofer to my old no-name speaker set-up. The 2 8" subwoofers in the 2006's were a huge improvement over what I had, but have still wondered about the benefits of yet another, separate subwoofer. I'm sure there's room for improvement on the bottom end, but the 2006's can already bounce me out of the room.
The Def Techs seem to get along well with the 1050. Powerwise, I have plenty of room left with the 1050. It seldom sees the volume indicator over 40. I'm happy with this set-up, which is a good thing, since I expect to have it for quite some time.