It's interesting to see all the various replies regarding VA7/76.
I was an owner of a VA76 using it in a live situation for 8 months and fair enough, after editing the registrations you can get good results. For me, it just sounds like a glorified G1000 (own one of these, SD1 and Korg Triton pro).
To sum it up I'd say it's like any other keyboard. If you're prepared to put the time into it you are rewarded. For live use though, I found it a pain in the rear. It's OK if you are using preset registrations and not accompanying anyone. If a professional singer comes up to you and gives you any music that suits them for you to play, you have to be able to call up a rhythm with the right tempo, a suitable left hand sound and right hand sound plus solo (no time to set transpose. You have to do it in your head if they are to sing in a different key to the score they've given you).
All this has to be done within seconds, otherwise it makes you look like an idiot and not very professional. The VA7/76 fails in this department. The touch screen is just too slow to navigate around.
Also, changing upper 1 and 2 sounds are far slower than with a G1000.
To sum it up VA76 is good for a home keyboard, for live use shop around.