Hi, my name is Alberto and i write from Italy... i've a stage piano sp4-8... it sound very well, great dynamims, even if it's a cheap product... but rochestral sound are so really... i like too mucch piano jazz, it's a sound downloaded from kurzweil official site. Il like jazz, I played at the brass group school, with Enzo Randisi, Ignazio Garsia, ecc... I use w the sp4_8 with the arranger module Roland BK-/.. i think it's a nice combination... thanks to everybody!!!