Ian, you're right - I spoke based on hearing the previous Tyros harmonizers, and the demos on line. I must admit, it'd have to be a night and day difference for me to change my mind though. The over/under usage is not the issue - it's the whininess that makes it sound so synthetic. Vocals are too important to me, and like many of us here, I have my "go to" sound .... I can't get it with Roland or Yamaha so far. Korg has been the best for me and Ketron was a close second.
My apologies for judging too quickly though. You are right.