I agree that Yamaha has brought that to another level. I know that when I owned the Tyros 1, I enjoyed their sounds, but when played through a big PA or against another keyboard like a Korg, I felt the overall sound had a thin sound, not by any means that it needed more instruments but it wasn't as full body deepness, it was a more of a boomy suedo deep, compared.

If Yamaha has made these new voices sound more realistic than before great, but if the overall sound is still " thin " to my ears, i might stay away.

long story short, yamaha has done a great job on those samples I heard, putting it up to at least par with the PA1x for realism