The SRJV piano board isn't nearly as good as the session board's piano. The piano board has some nice electric pianos, but for acoustic pianos is not worth the money. I don't have one, but I've heard many demos. The session piano is much better.
Remember, the SRX02 concert piano board does not work in the XPs. Those boards only work in the XV and Fantom keyboards/modules. If you want the best ever piano on a synthe, you want this board.