I can see how just getting a straight answer to a question instead of opinions along the way can be a challenge here and as a result I don't get an attitude when someone gets upset with me when I follow suit.
To answer your question, I have a gear set that looks like the set in the picture in my headlight motors now. I don't remember for sure if I purchased them from the Fiero store, or Ebay as they have been in the car for about four years now. I did have one fail, and I rotated the bad portion out of range and reinstalled the motor with the same gear. If I have another failure I'll look into purchasing the metal gears.
I believe Rodney's gears are near that price each in metal form, not pairs otherwise I'd have taken that route from the start. I have extra motors so premium gears were not a priority. Buy them, try them and tell us what you think.
My bad, you asked for opinions so strike my comment regarding the ones that don't involve actual experience with the parts.
[This message has been edited by Joseph Upson (edited 11-28-2012).]