Only from what I've heard or read. Most have been happy with both, although have had to do more work to the Fiberglas version to make it fit better here or there than the metal one. Which still needed some minor tweaks, but just minor as far as alignment, fit & finish.
Which I would hope it would be closer for the price and all.
Let us know what you go with and your thoughts after you get more input... and finally make a decision!