Some random thoughts on my VT.... The best looking mode (to me) without tweaking any settings seems to be THX Bright... however it's a bit too bright at night, and the THX regular mode seems too dim regardless. I tried to get to a similar picture in custom mode, but didn't have much success last night. To me 96hz with 24p material has waaaaay too much flicker, so setting the tv to 60hz seems to be best for me.
The ARC works fine for me with my Onkyo 709 - just took some tinkering to make it work.
I get some light buzzing on bright scenes, but it's barely noticeable at all. I figure this will be better when the panel brightness is dialed down some. I doubt most would even hear it, my GF couldn't.
I enabled the Pure Direct function but didn't see any difference in picture with my new Panasonic Blu-Ray DMP-BDT220.
This concludes my random thoughts for now - wish I could go home and tinker some more...