Thanks George for your help. So, 740 does all of three things what KN can't.

Do you know if VA3 does also all of three? If it is so, and at very similar price VA3 and 740, it would be VA3 a better option?

Because on 740, I don't like rhytms (all of time with guitar, rarely with piano)nor variations (minimal variations, I think), and I do not love only 3 user styles.

Tank you.