I have installed both AMD and Goodmark Dart quarter skins.
There is no comparison. The AMD panels are heavy, and fit well. One inch too short? I used them with no issues other than a little hammer and dolly work at the rear quarter extension to get it fitting really nice.
The Goodmark are flimsy, have huge flanges to trim off, and don't have the dogleg where they meet the rocker.
I still have a pair of Goodmark skins here as well as AMD to compare to.
