If there is one thing i hate about Mustangs, it's the fact they don't come all standard with folding mirrors. When I had my 96 car, someone broke the mirror and left it hanging on my door in a parking lot. I make sure my car now has the cobra folding mirrors and have an extra set just in case I buy an other car soon.
I would never use the folding part but there is less chance for being broken plus they are painted. I'll find a cheap set. The shape is better I think compared to the one piece . Even if I painted mine they wouldn't look as good as those.