Thanks for all your input. That wersi looked good, to bad there isn't any dealers here in Norway, at least none that I've found.
Regarding full keyboard modes.
On the Roland keyboards, it seemed to change chords almost everytime I had two or more notes played at the same time. I tried both the Intelligent and Piano recognition mode, and neither worked any good when playing like a piano player. As a piano player you don't always use all the notes in every chord you play, and often you play some melodic fills, that fit the current chord. On the Rolands whenever I played a fill with a blue note, or any note that didn't fit the current chord, it changed chords. So playing a mixolydian scale lick over a G7 chord for instance, had the arranger changing chords for almost every note I played. But as long as I just kept to playing only chord notes it was fine..
The Yammies did a better job when fills are concerned. It only changed chords when you pressed three or more keys down at the same time (The Rolands seem to treat sustained notes as chord notes). And playing unchordal notes in fills went fine. But pentatonic scales messed the chords up bigtime! It changed chords everytime I played notes from the pentatonic scale.
The DGX changed chords for every note I played, I mean every note!! As did the Casio.
I used a pair of studio headphones on all keyboards, to get the right sound.
Maybe I was doing something wrong?
But I was under the impression, at least that is how they market this function, that you could play like a pianist, and have the keyboard follow you.
Maybe I need a band and not an arranger?

Doc-Z