Once again this year I was impressed by the Sadurni Acoustics Staccato "big red horn" speakers. I think my Maggies have spoiled me to the point that most "box" type speakers sound honky to me now, so I lean heavily toward planars, electrostatics, and horns. I also very much liked the Volti Audio system. Those high-sensitivity horn loaded speakers were extremely open and airy. Most realistic jazz horn sound I've ever heard from a speaker.
I was there on Friday, and was slightly disappointed by many systems that I've heard and liked before but just didn't seem to have the mojo that day. Maybe the rooms weren't quite dialed in yet, or maybe I was just having a bad day, but rooms like MBL and Legacy let me down this year. The top of the line Dynaudios powered by Mark Levinson electronics were just okay - as far as I could tell, with the guys running the room yelling at patrons like we were in a sports bar the whole time. Very annoying.
At the other end of the spectrum, the little Napa Acoustics bluetooth complete micro system with a tube front end really impressed me. It was obviously not the best sounding thing at the show, but on a cost/performance basis, for under $600 complete with speakers, it's a great little system.
Finally, my vote for weirdest phenomenon goes to Emotiva. I sat in on their demo of a large surround sound system playing "Time" from Dark Side of the Moon. The alarm clock intro sounded great, but when the material went full range, their multiple subs were pushed so hard that they actually slowed down and went noticeably flat - by over a half-step - compared to the rest of the program material. I've never heard anything like it before. Very bizarre. Went back later and they had dialed it back so the subs were "merely" distorting.
My biggest regret is that I just didn't have enough time to see everything. Circumstances required that I try to squeeze the whole show into about 5 hours, and it just couldn't be done, so I probably only got to 40% of the rooms.