While I do not have as much different RV time as Paul, I have flown more than a few and agree to look at the aileron shape. My 8 has firm aileron stick forces with flat control surfaces. Several others I have flown had overly light stick forces with under bent, convex, control surfaces.
The thin control surfaces on the 3 can be easily overbent convex or bent with a smaller than ideal trailing edge radius. Would be worth a close look. In my opinion.