The KF90 is priced at $3195.00 wth stand and bench. The VA76, with 76 keys instead of 88 hammer weighted keys sells for $2495.00 with no stand. The KF90 has the vocal harmonizer. The VA7 or VA76 does not have a vocal harmonizer but rather a vocal sampler. The grand piano sound in the KF90 is better than the VA7 or VA76 because you can modify some of the piano parameters such as how open the grand piano top is opened, how much resonance, brightness, etc.
George Kaye
Kaye's Music Scene
Reseda, California