After 5 gigs with the 4X, I have no doubts that the 4X is more gig friendly than my Yammies...controls and songbook wise.

The styles and voices/sounds are a trade off between the Korg and the Yamaha. For example, where I used to do more bluegrass styles on my S970, I now do more country types of styles for my older tunes. And so it goes.

It's also obvious that the Korg is easier to edit styles/voices and I'm hoping to get better at that as time goes on.

Rog L