umm...... excuse me - wasn't a question raised here for me?

I'll try and answer as simply as I can.
There are a number of reasons why the Yamaha harmonisers fall short of my desires.
1) They only work while the arranger section is set to that hand position, and playing. When the drums stop - the singers leave the stage.
2) The start/stop is rough and cannot be turned on and off to simulate a real backup group blending in and out of the melody. Hit th efootswitch at the wrong time, and you get a hiccup in the vocals
3) The actual tone of the voices is lackluster IMO. Even my old Digitech VR sounded better with my voice than my Tyros did. ( yes, I had a Tyros, just couldn;t wait to dump it )
4) Using the harmonies while using seq play was too involved. Remember - I want to ALWAYS trigger the harmonies live from my right hand...I never want an auto chord channel to just send a signal to the processor.
5) On the PA800, I can trigger from the right, have the LH playing bass and follow the drummer in my good, old, trusted Manhatten Transfer style. No arranger chords getting in the way of the intricate harmonizations of the main instrument in my shows - my voice.

The Digitech VR is not teh newest technology, yet it still performs better than most of the competition. Even the cheaper TC units did not fit into my setup for one reson or another.

Now, stop your bickering please, and get on with your lives !