It's no longer necessary to install both and entry door and a "storm" door. Back in the day when the only door choice was wood, having a storm door made sense. Today though, doors are far better built and provide able storm resistance as well as strength and beauty. As for deciding between steel or fiberglass, it's a no-brainer. Fiberglass entry doors can look like wood or steel doors, but don't rot or rust. They are five times more energy efficient and far stronger too. I'd recommend you take a look at the doors made by one of our sponsors Therma-Tru. My office manager has a Therma-Tru door that we put in for her a few years back and it looks as good today as the day it was installed. For more for, go to www.thermatru.com.