Man, that cab was a real champ on the gig! It did everything that I thought it would do. It was full, it was clear, it sounded great... What surprised me a little bit was that it seemed to be able to really fill the room and the mix without having to be pushed very hard. That thing was slamming, though I felt like I was barely pushing it (as far as the gain/volume settings on the amp are concerned). Now, granted, I was pushing it with a Mesa/Boogie Fathom (M6), which is a very stout amp, but prior to the show, I tried it with a variety of heads and it was clear with all of them that the HD212 gets very loud and authoritative without having to be pushed too hard (though it could take a lot of juice without complaining, too).
In honor of my 19-year old dog, Gibson, whom I had to have put down last Thursday (that was a rough day...), I played my Gibson Explorer most of the night. 5-string duty was handled by my ash/maple/wenge/wenge 535.
I did not find it a pain to move, but then again, I'm not very sensitive to weight issues, either. All I know is that from a tone/volume/performance perspective, the HD212 is definitely one of the most impressive (passive) cabs I have heard, considering its size. Highly impressed!