Update:
Brought out my S970 for a small gig yesterday. Older folks who like bluegrass gospel. The S970 styles(bluegrass country) and voices(dobro/lap steel) are yet unmatched by my PA 4X.
I'd love to be able to reproduce those S970 styles/voices on my 4X....especially the Hawaiian lap steel...ain't nothing close on the 4X. The 4X editing system is pretty versatile...maybe I'll figure something out.
My 4X will still see the majority of my gigs. But I'm not getting rid of my S970 just yet.
I will say though that it seemed like I was playing a toy keyboard(S970 Keybed) after using the 4X.