I also have the R972 for almost 1 year and a half. It did and does do amazing things for my room. The complaints I have about it are few. I don't like that I can't manually control trim/volume on Trinnov. I have a perf screen with my center channel behind it, and though it sounds good to all of my friends, I wish I could make the center a little hotter, maybe +2dB. Setup and control are not quite as intuitive as Onkyo (which I am familiar with), but I use a nice NevoQ50 for my remote, and sometimes they don't communicate well, which I think is the Nevo.
The finish is wonderful and the look of the Sherwood is great. Heavy beast. OSD doesn't come across with HDMI, which is a bummer. Also, I wish there were an easier way to switch off Trinnov and try another Sound Format for comparison. You have to go into the menu, and take Trinnov off, then come back out. It takes quite a few steps. Would be nice if just a quick toggle between the two.
So the real positives are the Trinnov (which really is incredible), the finish, the sturdiness/build quality, the amp power, the zone options, 12v trigger, and once you do setup Trinnov, there are many different frequency curves you can preload to determine which sounds best to you (house curve, flat, audiophile, etc.) all with a different response so you can get a boost in the base, mids, highs, flat, and you can also set Trinnov to fix everything, just the speakers, just the bass, etc. Great receiver, and for this price, I don't think you could go wrong.
I might be ordering the Onkyo 1009 or 3009 for another room, and if so, I will put them both in the HT room and see how they compare against each other.