Hi Icelander, I just noticed this post, though it is an old one. I assume that by now you have made a choice about Korg Arrangers. If not then maybe I can help. I had a Pa4X for around 12 months, lovely feel to the keyboard, impressive styles, able to add extra free styles etc. After 12 months I decided that maybe I should give Band in a Box a try. Having both side by side to compare it soon became apparent that BiaB was far more versatile, and 100% simpler to write and record. In the end I upgraded from Pro to UltraPAK 2020 and sold on the Korg. Just add a MIDI keyboard of your choice and save an awful lot of money for in my humble opinion a much more usable system.