... or just get a PA4X.
Don,
You had both...at least the S970...,
You got all the styles and voices(the lush steel guitar and so forth) of Yamaha?
Overall, I like the styles better on the Korg. I have been able to find everything I need. Yamaha of course has a lot more third party styles available. Some good, some not so good.
I have found an excellent Pedal Steel guitar. There is also a really good one to use in styles or multipads.
I prefer the guitar on the 4X to Yahama!! That's amazing.