Roy,
If you are a piano player and want to enjoy playing on a 88 key weighted keyboard, I would recommend the Roland KF90. And Don, this model has a vocal harmonizer built in and it works great. This is like a best of the VA7 and VA76 but much easier to use and with built in speakers and still only 52 lbs. You get a great arranger, great piano, great sequencer and all the other goodies including a vocal harmonizer. It sells for $3195.00 and comes with a wooden stand, wooden bench and the best thing.....a video instuction manual recorded here in the US by a really easy to follow roland product specialist.
My next recomendations would be the VA76 or 9000pro because at least these have 76 keys, but don't feel like a piano.
One other one to suggest would be the Korg SP500 which is first a great piano and next an arranger keyboard for around $1500.00.
I sell all of the models you are interested in if you have any questions or needs!
George Kaye
Kaye's Music Scene
Reseda, California
818-881-5566