How the hell anyone sells KBs against the T4 is beyond me, it never fails to surprise me and the people who play them.
I have seen yet nothing to beat it for a full overall sound.
I know most of you don't like this kind of music but I am more impressed with this Vangelis Chung Kuo song. Played and programmed on a keyboard that cost 6 times less then the Tyros 4.
http://www.youtube.com/watch?v=Pj5ljPNNNx4&feature=mfu_in_order&list=UL