I am getting quotes on Amarr and Clopay garage doors including installation. How well does the Amarr Stratford 1000 compare with the Clopay Value Plus garage door in guage of the metal, quality of construction and rust prevention system? How do they compare in price? Is there any difference in the knock off brands--Reliabuilt (Lowe's) and Holmes (Home Depot) in terms of quality and construction?