Can any of you new TY4 owners tell me if you have found any polyphony problems. I am considering buying the TY4 (or perhaps something else) but this quote I found online worries me because I regularly play full right hand chords with my right hand. Here's the quote:

"I am tonight sat at the new Tyros 4 playing and working my way through the big sounds that this keyboard is supposed of offer. As the evening as progressed one MAJOR thing I have found with Tyros 4 is problems with polyphony - big problems!
For example, if I choose the VocalFoxtrot style from the Ballroom style section and then try to play a right hand chord with the notes D F G Bb and D - the keyboards backing vocals just vanish.

And this is apparent on other styles too!

The more you play this keyboard the more you find that anyone who can play block chords in the style or organ or big band suddenly hits a stumbling block and a big one. WHY after just 48 hours am I finding this. Surely Yamaha would have played this keyboard before releasing it? Wouldn’t they?"

... Thank you.