Ian
I had the KN5000 and still have the KN7000. They are hard to find, as people are hanging on to them. My KN7000 is bringing 2/3 of what I paid 9 years ago. They were definitely ahead of their time.

Dan
As mentioned, I think the Ketron OS upgrade will fix most of the bugs you mention. On top of that, AJ has gone beyond that with, not only new styles, but increased functionality in many areas like better control of the Leslie DSP,

Ketron is slow and mysterious and AJ has been waiting too before he launches his kit, but I think it will be worth the wait.

Bernie