Originally posted by Dnj:
Again.....it is left to be proven.

Well Donny, Malika3625 says, "but you have to listen and explore Tyros4 by yourselves and since I have one I know how much it has been improved from Tyros3 specialy Drumkits and Voices with SA2."

He seems to have first-hand knowledge, although to be fair, it is his own opinion.

Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.