Thanks guys,
I discovered in my research that Helicon makes a Voice Live Play GTX which includes effects for guitar. This unit has a midi input. I have rented their Harmony M pedal which does midi but I found that they would lock up or suddenly not produce harmony and needed to be rebooted.

I also play guitar and the freedom I get from my Digitech reading the chords is what I'm looking for when I switch to keyboard. Last spring before buying my Yamaha PSRS 750 I had rented a PA 800. I could live with the harmony onboard even though I feel Digitech is better. I could not, however live with the $3000 price tag. Thought Yamaha's PSR S950 would be my answer but Yamaha's VH2 is drastically flawed.

God Bless,
Don
PS Dave, in one of the 900 demos on YOUTUBE there is a really nice redhead. She sings well and even has a few freckles.