I don't have the Tyros 5, got the T4. I also have the S970.

Bottom line the T4 is still a better sounding keyboard than the S970...to my ears.

I'll gig today with the Tyros then take the S970 out for her maiden gig tomorrow. We'll see how it goes, but I have been very impressed with the S970. And I think it's going to work as our primary gigging board. We'll see.