Yamaha sounds haven't, to my ears, changed much over the last 20 years. Nothing wrong with them ... but nothing to lift me up either. I find the brass sounds still "electronic sounding" and the strings "brassy".
As to the horns, they are very nice ... but too predictable. Great for students.
However, the player in the demo can join me in a gig any day ... she is a very accomplished player.
Reminds me many years ago when I attended a demo of the latest-greatest yamaha organ in Edmonton, Alberta. This thing was a monster being played though a set of 10' high speaker cabinets. The guy enabled the "piano" settings ... "there", he says, "sounds just like a Steinway". Well, maybe a Steinway being miced though a 1000 watt PA ... not my idea of a wonderful piano sound