I have championed this topic in many other discussion groups. This topic has been around for a long time and will probably continue for an even longer time.

Two things: 1) The manufacturers keep the top end arranger keyboards in their home divisions because it works for them, NOT US.
2) No matter what keyboard, Pro, arranger, toy, etc. - a good musician will make good music. One of the first electronic keyboards I bought was a mini Casio CT100 for $100. I still have it and can make it sound Pro whenever I have to, although I'll stick to my 2000 given the choice.
In the old days we used drum machines and played left hand chords and used footpedals. Today I use my arranger, but I usually prefer to play my chords (full) rather than two-finger them. Whatever works. Good discussion, folks.