I've had my HT-SS360 for a couple weeks now, and overall I'm very happy with it. It's a great value for around $300!
The sound is great for the room I have it in (surprisingly, I have to keep the sub turned down), and the HDMI switching works very well.
I had speaker wire already run along my walls for the surround speakers, so I purchased a full set of connectors from an eBay seller (bogue_engineering) that I twisted onto the ends of my existing wire, then sealed with heat shrink tubing. I mounted the rear speakers using inexpensive Monoprice wall mounts. Everything looks and works very well.
I programmed the system into my Harmony Remote using the HT-SS2300 codes. The SS360 seems to be just a cosmetic upgrade to the SS2300.
The auto-calibration with the included microphone worked fine, though it wasn't really necessary for my room.
Note that there is no on-screen display output to your television, so you'll need to look at the small LED display on the front of the receiver when navigating its menus. It's not too big of a deal, as you'll probably rarely need to use the menus after your initial setup & calibration.
The system does do HDMI audio processing, and for that reason does not pass audio through to your display device. I have an Xbox 360, a Playstation 3, and an AppleTV all connected through the receiver. 1080p video gets passed through without problems to my Sony SXRD television. The receiver does seem to remember your A.F.D. settings on a per-input basis.
I don't recall if there's a dynamic range compression feature, but I may look into it as the system is a little too loud for me to play games on late at night without disturbing others, even at low volumes (mostly subwoofer 'boom').