I used AMD for everything except quarters. After comparing about 15 challengers under the same roof, all with either NOS or Goodmark Q-panels, I decided to go with AMD's. I was actually cutting off my Goodmark skins as I hated how they were done a few years back.
I was very happy with the AMD's in hand, but after lengthy trial fittings, discussions and continued comparisons – we had to exchange them for Goodmarks. Although the Goodmarks had all the flaws that bothered me, they were all fixable. The AMD issue was not! Basically, from the body line up it was extremely flat. There was no outward curve to them and the lower kickout seemed to start too early - which makes the body line not seem as aggressive. If the AMD Quarter had this, I'd go with AMD - hands down. What bothers me, is I read every post on multiple sites about AMD and Goodmark comparisons prior to purchasing and no one mentioned this issue. weird.
Anyways, my quarters look really good now. Took a lot of work though and cost me a fortune. Looking back, I should have found some NOS 72-74 and swapped out the light. The body line on NOS ones are sooooo beautiful.