EPU- Personally, I think that the acoustic piano in the session board is better than the one in the piano board. This is one of the best sampled/synthe piano sounds I've heard. However, the piano in the piano board sin't half bad either. Between the time the piano and session boards were released, time marched on and obviously Rolands engineers were able to get a better sounding piano using less waveform ROM! Thats just IMHO obviously.

However, the best piano's are to be found in the SRX board- but you need an XV synthe for that one obviously!

Cheers.