Most of the aftermarket panels are a bit "soft" on the body lines, at least most of the one's I've tried.. Goodmark seems to have the radii correct, but there sizing of the panel from body line to body line seems to be a bit off on the one's I've used... I think most of it is from the fact that the stamping tools and dies have just been overused and the accuracy is gone. Heck, not even the OEM one's are perfect though. As far as who's are the best, not a clue... I've recieved good ones and bad one from all of them... Probably just a case of poor quality control on the product.....