The choirs/vocals on this unit sound a lot better than the choirs/vocals on the Tyros4. The samples used in the T4 are old ones recycled from Yamahas previous performance pianos/synths. I have the very same on my P-250 - with the switching and all. The Roland FP-4 has some choirs/scat voices - and you guys forgot the VA line marketed as "A Keyboard that sings" with their V-Vocal technology. This is nothing new or groundbreaking. But I must say that I really dig the sound of that operatic female soloist in the PA3X demos - that is one of the best ones I've heard on a hardware unit. Makes me remember the Techno Opera from The 5th Element - that was beautiful!
So if I can get a female backup singer doing the ooos and aaas and not having to put up with the FVS "Female Vocalist Syndrome" - that is a plus in my book
DocZ
I actually disagree with you on this one. I don't remember having any choirs on the T2. The T4 has many Choirs that are just breathtaking. The Boys/Man's Choir is two that I can think of off the top of my head. I don't remember the Pa2xpro I had having any decent choirs either. I haven't heard enough Pa3x demos or played it live to determine how it competes with the T4; I don't know how you can either.
Just one example of how I use choirs practically is using the Gospel Hmmmmm choir is in the breakdown of Elvis "Suspicious Minds". When I play that voice during that song, people go nuts. That's a very different sound then you'd play during the Stone's "You can't always get what you want". I played the Boys Choir during Canon in D during a Wedding Ceremony and everyone commented how beautiful it sounded.
Don't underestimate the importance of good voices. I hope the Korg Pa3 voices are as good as the T4's because that means those customers who purchase that keyboard will be satisfied.