I was there on Sunday. I concure that the Ohms were better shown than last year. I am a Walsh 2000 owner (since 2009), so I could compare the sound in the room at the Park Lane to my own room's sound (where I use better electronics and a pair of Vandersteen 2Wq subs). Except for the amount of low bass, the sound was quite similar to my own system. FYI, the severe tow-in was John Strohbeen's answer to what he felt was a very bright room.
A lot of serious, quiet listeners were in the Ohm room both times I stopped by. That was not the case in many other rooms.
I also agree that the Electrocompaniet (which I heard without the DSPeaker) was the best sound of the show, but at less than 1/10th the price, the Ohm system acquitted itself very well.
I did like the Cambridge Audio room, but the CA reps there seemed very focused on impressing everyone with how cutting-edge their musical tastes are, and with not raising the volume above background levels.
OTOH, many rooms pushed the dBs way, way too high, to the point of ruining the sound by overloading the room.
I also enjoyed the semi-DIY speakers from Pure Audio in the VPI room. They were very neutral, and sounded very different with each LP played. But a DIY speaker that you can configure yourself, and that does not require speaker-building expertise to assemble, is rather clever, IMHO.