Tom,
You're wrong about the "Sam's club" comparison, but I agree about the Lexus/Chevy deal. The success of the 2000 was probably a big surprise to the Yamaha people, and they are just now finding out that they shouldn't have cut so many corners in it's development.
Even with it's problems, I had good luck with the 2000, but you could not pay me to endorse the X1 again. Aside from the weird polyphonic allocation, it's a hardware issue with me, and that will not change till a new case is built.
If they just put better keys on the 2000, and fixed it to do what it's supposed to do - it'll sell like crazy.