ORIGINAL: Campy
My personal preference is for regular flaps over flaperons. I have not had good results with flaperons, especially if I have had to do any wing leveling.
Someone told me that using the ailerons while the flaperons were deployed did not allow "adequate" movement of the ailerons AND created uneven drag - ie, producing uneven lift and also creating a "turning" effect on the plane.
I don't know for certain. I did 2 flights with flaperons and was NOT HAPPY with the way the plane performed while landing. They were converted to regular flaps and I was substantially happier with the performance and handling of the plane while landing - the plane was a lot more stable, especially if there was a crosswind.
I agree that flaperons are not necessary for the airplane. It sounds like you just need to practice approaches and landings. Less than stellar technique that remains hidden by forgiving airplanes can easily be brought out into the forefront with a more demanding model.
The asymmetric lift and drag does not just occur with flaperons; it is simply a fact of aerodynamics. The aileron descending on one side increases the camber of the airfoil (changing the chord line), which simultaneously increases AOA and lift. Because of the increased lift, you will
always have increased drag on that wing as well. Lift and drag always come in pairs - there's no separating them. Of course, the other wing does the exact opposite. After all, without asymmetric lift and drag you wouldn't be able to bank the wings and wouldn't need a rudder.