Yes I have heard the Grand Piano's. They sounded very good, which surprised me because I did not like the electronics driving them. I have not heard the 816s, but did hear the larger/newer 1027's.
I like the Sonus Fabers and the JM Labs (which again surprised me, since I have sorta had a chip on my shoulder in regard to JM Labs. The chip has been replaced with respect) I think both of them are good speakers for the money especially for the price they can be had on AudiogoN. Neither are cheap, but they aren't expensive either. The Ushers, in comparison to the Sonus Faber and the JM Labs that I have heard sounded like a cheap speaker. Everyone has their opinion though.