I just cut up a Dynacorn to make patches because the patches I bought were so bad they couldn't be used without extensive work..  The Dynacorn units look good and seem to match profiles well and have nice sharp bend radii as compared to the stuff out of Canada.  Most vendors carry Dynacorn but you will need to make sure that is what they are selling you.  My neighbor put a Dynacorn on his 66 fastback and side to side you would be hard pressed to tell which was which.

I bought mine locally due to limited time but found that while prices are fairly similar at the on-line shops, the shipping charges can vary l lot from one place to another.