RV-6A compared to RV-9A
I flew the factory RV-6A for just over 5 hours in two days with Mike Seager. It flew like an airplane. The approaches are flown 10 MPH faster than my RV-9A.
I have flown my RV-9A over 270 hours in the past three and half years. The wings are longer with a shorter chord. The vertical stabilizer has an offset from the centerline of the fuselage. The engine mount has some offset thrust. Virtually no rudder input is required on a "normal" takeoff. In cruise flight, a touch of rudder pressure is needed to keep the ball centered. Decending at speed requires more rudder pressure to keep the ball centered.
The differential aileron deflection up vs. down makes the turns easy, with little rudder required.