you got the korg pa800 as well as the MS Jonesyboy ? How do the two compare next to each other in terms of styles, sounds ease of use ? If you have any giga sounds please use them in the styles on your MS and tell us if they really sound any better than the proprietory sounds in the korg as a complete mix ? Do all that you can to balance the styles and EQ them appropriately.All this should already have been done on the Korg.

I believe this is key to establishing the reality of the benefit of having an "open system" based arranger keyboard