The XK3c has standard synth type keyboard contacts, but the Hammond Suzuki B3 has beautifully made multi contacts (gold). Each key contact unit can be removed independently. Cleaning the bussbars on one of those is such a pleasure! The only problem is its still too big and heavy for most people, still requires a Leslie and costs more than a vintage B3. Part of the reason the KeyB duo (at 26 kilos) is so popular...and it has transpose (much to the despair of the designer who was forced to put it on by his customers!).