I agree Ian...... It's more the talent of the player vs the KB..
although I always have a crowd around me at gigs like this with any kb I ever used & I don't even use a T4

go figure
Of course, Donny...I was just kidding you...an S910 is a perfectly excellent arranger...used one myself, till I started playing the Tyros4.
That said

...I'm hooked on the T4, just like Al, Steve and Scott.
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.