Everything I've read over the last couple years says AMD is the best. They don't make every thing but people say what they make fits best, and they do supply pretty much everything they don't make through other manufacturers.
I would do a search of the forums, this has been beat to death And when your done reading all that you really won't have a better idea
They are all hit or miss as far as I'm concerned. I have bought stuff at the same time and one is good the other is crap, I have bought things a year apart and the older one wasn't to bad, and the new one fit like crap.
AMD seems to be what a few people on here strongly advocate as the best. We used an AMD quarter on my car after I got hit, and it fit ok, but still needed some work. Dick at BOS said it fit better in some regards, but overall it was a wash as to which brand was better.
I had a conversation with the amd guys at sema, There are two brothers that are owners I believe, They both worked for another company that years back I thought was the place to buy sheet metal, I had a friend that used this company a few years back. He owns a bodyshop and could say nothing good about the fit and finish. It wasn't amd. I talked to another friend of mine that has done a couple of first gen camaros and he said the same thing about fit. I ordered 2 door skins from amd and we compared to door skins from the competition and the amd was heavier gauge and overall just nicer quality. I would buy amd again. You will still have to do a little welding on the edges if you want the new car fit. I also researched a lot on the websites before ordering and all lead to amd, good luck
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
Who is making the best sheetmetal now days?
And when your done reading all that you really won't have a better idea 
Hybrid Mode
