Tony there isn't an arranger Kb on the market now or in the past that I have not spent hours & hours on end setting up for gig performances..... If you want to play with what comes out of the box that fine...but not for me. Many don't even know what to do to make it sound better and that's fine also if they are satisfied with the default sounds & styles go for it,... I prefer to make it "my own sound" and be happy with what it does on stage FOR ME, spending countless hours shaping what my audience will hear.
It's not just KORG it's EVERY UNIT OUT THERE....that's the fun of being able to EDIT everything to make it sound right, some just dont care or know how to do this..
But hey....to each his own I say.