I have to say the more I work with it the farther it passes the T3. The advantage is not immediate (with the exceptions of the voices) but shows up in small doses as time goes by. The soiund engine seems to be better. (Like the XF8)
I totally agree. More than several people have asked me, "Why the Tyros4 instead of the Tyros3?"
Having used both extensively, the sum of the positive differences increases the more you play the Tyros4...for me, buying the latter was money very well spent.
Congratulations on your new arranger.
Ian