While I am not very skilled at playing keyboards, I do finger my chords, including inversions. So what do I need chord recognition for? Why not just an arpeggiator (or 16 synchroed arpeggiators as in the Emu XL-1))? Of course, I would loose access to the thousands of styles on the web, but, in principle, what would the difference be?

Trying to answer my own question. I guess the arps would be limited to drum type sounds and notes that I have fingered. A style can include notes and controller messages that are not in the fingering. What else?

I have noted that some machines have both chord recognition and arps. The Casio MZ-2000 and the Roland EH101 (or something like that) come to mind.

Another question. What arrangers have velocity sensitive styles. I do not think my PSR8000 has it, but I seem to recall my older GEM arranger had it. What about the Solton X1?