I am will be having my rear entry door replaced next Monday. The installer recommended steel over fiberglass. The exsisting wood door was exposed to a lot of sun. He said steel will last longer with little maintenence, but another installer said the same about fiberglass. Two questions. 1.- Is steel better? 2.- Is $975 installed with parts and labor too high? I am in San Francisco and another installer quoted me about the same price. Thank you!