Wouldn't trade mine for the world. I was talking to a friend last night who has one of Jude's first accordions which I believe is a Bb as well as an A that was made more recently. I have a C and a D, and just like the others, they each have their own personality but maintain a consistent quality.
I was going to get one, but then bought an expensive fiddle instead. And, since I'm no longer involved with a jam band, I can't justify getting another key accordion right now. Maybe in a couple of years. And I can't justify having more than one C accordion, unless my Miller box craps out.