As some of you already know, both the PSR2000 and 9000 exhibit a 'full keyboard' mode CHORD RECOGNITION problem, which even Yamaha USA acknowleged existed, and who also assured me that it would be addresed & corrected on the Tyros. Unfortunately, after having several Tyros owners test this out on their keyboard's, it appears the problem STILL exists.

Here is a link to the thread where this problem is discussed in great detail:
http://www.synthzone.com/ubbs/Forum37/HTML/004090.html