How do you like the 705? I am deciding between the 606, 705, or waiting for the 706. thanks in advance for any advice.
I love the 705. I also have a 573 in my office--I really like the Onkyo gear. Now is a great time to pick up a 705, since they're on closeout (seemed like I got mine at a closeout-type price).
As pictured, I don't have enough space above the 705--it gets extremely hot, hot enough that the fans come on--if I play music at extremely loud volumes for say > 30 minutes. I can't hear the fans over the music, but it worries me.
My front speakers are bi-amped, which the 705 supports in 5.1 mode. It does get louder quicker with the bi-amping, saved me from buying a separate amp.
The Audyssey calibration sounds pretty good to me--some folks don't like it, but it's a far better starting point that I would be able to manually do. The OSD controls are pretty good, though basic in terms of the look. Very functional.
It works great with my Harmony 880, though in my office I just use the Onkyo remote. The 705 remote keys don't feel as 'solid' somehow as the 573 remote.
Anyway, all in all I'm very happy with both my 573 and my 705.
There is a pretty active 705 user forum on avsforum.com.
Good luck.