I would like to clarify that my posts were strictly based on what I heard at the show and that I am not in any way questioning or generalizing the performance of the NC1200-based amps. Based on your posts, I'm sure you're happy with how they sound in your system. I also think that perhaps you would not trade the sound you're getting in your system with these amps with how they sounded at the show.
These amps are new in the market, so perhaps dealers have not had a chance to really explore what gear mates best with them to get the best possible sound. Every new company goes through this experience to some extent, so time may tell a different story as users start to narrow down what works best with these amps.
I did sit in the sweet spot in all rooms. I also happen to have speakers that sound best in the sweet spot. They also sound great from anywhere 20 - 30 feet away. Sure, the sweet spot magic brings everything into focus and all instruments take their space in the soundstage, etc., but the quality of the sound is always there, regardless of where you are.
We also have different tastes. What suits you and me, may not suit others. In the end, it's what makes us happy what counts:)
Cheers