so am still tweaking the system, but just added in the 3.3's and am tweaking their position. i have them nearly flush against the back wall, and like how they sound, but will try pulling them out into the room some, although the listening position would have to get pushed back and might need an overhaul of the room furniture arrangements.
the nht's definitely need more power to really sing and am looking at mccormack, aragon, acurus, and marantz monoblocks as my next upgrade as well as biwiring them. also will be adding room treatments to the walls next as well.
If I recall, the 3.3s were designed to work against the rear wall. I love those speakers. Really dynamic and articulate. Bryston works well with NHT too.