I ran one at the EC Nitro GP on the weekend. Best thing I found is I didnt have to cut out the one that came with my stratus! The wing is super strong and the car was very stable down the main straight there.
pros:they do not flex at high speed, thus they keep the wing shape, killer down force.
cons: they break easily in a crash.
I think advantage is making carbon fiber wings in both 190mm and 200mm widths. these will be alot stronger than the plastic wings plus you get the extra bling bling factor