I have a Denon 5805, the monster (the first gen that only does 1080i, no Dolby True HD/DTS MA) and I'm trying to decide on keeping and using it as a power amp with a Pre/Pro, or selling it and getting something like a Denon 4520.
I am running 7.2 with Quad L Series 22/12/11/C 2x Quad L subs
Nothing close in the Pre/Pro market but the Onkyo 818 has gotten relatively close to that price during some holiday sales. I've seen some reports of open box Denon 4311s getting under the $1000 mark, but not near $600 yet.
The 818 has XT32 but not SubHT. If you only have a single sub, then SubHT isn't relevant.
The 4311 has both.