My ranking of support by national music-related businesses with which I've had dealings.
Bose, Logitech, Sweetwater, Audioworks CT, George Kaye and Yamaha. The first five slightly ahead of Yamaha.
All these folks were GREAT.
Of all these, Frank and George are the only ones who will read this, so that moves them up even further.
I've all of these places instantly respond to trouble and go out of their way to help!