I think I follow what Scott is saying and I tend to agree with him. I've owned a ton of autoplay boards and, yes, each generation seems to display improvements. However, my single biggest complaint has always centered around the chord recognition problem and the lack of quick, precise tracking of the bass line. Maybe the technology is not there yet, I don't know. Are we asking for too much? I do know that I'm using Band-In-A-Box much more lately to generate backing tracks because of the preciseness of the bass line, seemingly unlimited style selection, and fast chord recognition.
Larry