What are the performance trade-offs in the Icon A5 spin resistant airframe?
Though performance details of the aircraft are not available, there seems to be a significant weight penalty associated with making the aircraft spin resistant.
It appears that the aircraft had to get a specific exemption for increased MTOW (1680 lb as against 1430 allowed) due to the incorporation of spin resistant design. Note that the weight given by the manufacturer is 1510 lb, still more than allowed.
As required in the exemption, the aircraft had to be fitted with a ballistic recovery complete-aircraft parachute system, affecting the payload. The engine power is also limited to 135 hp. The range is also low (~300nm).