Pros / cons of each? I have a double door that needs replacing and am leaning towards a single steel with sidelites to fill the gap. Leaning towards steel primarily for the cost savings over fiberglass, but other than that am not very familiar with the pros or cons of either. Any opinions? Can I lean towards the cheap side and still be okay? I prices a Mastercraft at Menards for $1400, which is as cheap as anywhere.... I know she's no Pella, but will it be okay?