I had no problem choosing between an S910 and a Tyros3...the former had more bang for the buck, and had most of the the latter's features and sounds.

However, upon trying out the Tyros4, the differences were more apparent, even at first play.

Up until that point, I would have been very content with the S910, but the Tyros4 changed my mind.

The S910 is a terrific keyboard, but, not quite in the same league as a T4. The latter's sounds are incredible, and the styles are awesome, and can utilize the SA/SA2 sounds (not possible on T3), which are more plentiful and, of course, the T4 has a more robust construction and an aftertouch keyboard, which I have really come to appreciate.

I can fully understand why you like the S910 so much...I very nearly bought one, but the Tyros4 won out, in spite of it's much higher price...in my opinion, it's features, sounds, and overall quality, were well worth the difference.

Ian