We were going to check out a new Knabe 5'8" this weekend at a local dealer. The dealer told me that the Knabe actions are "heavier" than the Schimmels, Bosendorfers and Pearl Rivers that he carries. Since I don't play (the piano is for our kids) can someone who owns a new Knabe tell me what this means? Should I be concerned about purchasing a piano with a "heavy" action if I have two children, ages 7 and 9, who will be practicing on it every day? I want them to want to practice more... Thank you!