MOst important:
PLAY THEM ALL BEFORE YOU BUY!!!

All people here have diffent ideas and ways of playing. For one sure thing: you cannot buy the Korg i30, since it has no speakers on board and no sampler. So it ends.
But I wanted to let you know that it is the ONLY arranger (thats why it is called professional) where you can delete ALL factory styles and put in whatever you want. If you hate DIXIE/JAZZ/TANGO ??
Delete them from the memory !!

Really really superb thing. All the other brands are much much worse for customizing to your own wishes. Most of the times there are like 20 buttons for styles categorizes to world, latin, rock etc and in the end one button for USER styles. But so it should be for the home-based keyboards.

So whatever you do, the i30 will not be what you need, but do not forget to TRY THEM ALL OUT before buying ok?

Ilija