Had a chance to play the PXS5000 yesterday and compare it to a PXS1100 (was right next to it)...honestly, I don't really understand the $500 difference in price...the new action feels a bit different (lighter maybe?) and is quieter, but I actually preferred to play the older action (prefer the surface of the black keys)...couldn't really hear a difference in the piano tone. I know the 5000 has wooden keys, but these 2 keyboards are Very similar.