Go for the Pa1xpro , or the SD1PLus. The keybed is much better on the Korg, the SD1 has better ethnic, type stuff, while the Korg with the Latin Card is fantastic with pop, jazz and latin stuff.

the vocalizer and mic stuff on the PA is the most advanced and best sounding, the SD1 is probably the easiest to use and make sound good fast.

guitars, flutes, organs are great on the PA

Drums go to the SD1 for some stuff, and the Korg for other like Jazz stuff