I have Defendall fitted on my Roadster. My car is dark and the edges of the film are noticeable and collect bits of old polish and grime. These marks can be eliminated or reduced with care. On the front wings its a good investment - my car has picked up some pretty heavy marks and chips on the film. On the wings its essential - this is the area most prone to damage from my clumpy shoes. All in all, a worthwhile investment but not without its downsides.
