When we advertise we have the best products on the market we mean our category 3,4 and 5 wind generators are made out of all new parts and manufactured in the USA in.Louisville KY, Houston TX, Cincinnati OH, Atlanta GA and Roanoke VA. They have been built for 31 years with engineers with over 100 years combined experience. They will last longer and reach charging set points in lower wind than any of the competitors. Over time we therefore generate more power than any of our competitors. We are thus the "best" wind generator on the market. If you are considering another product which claims to be the "best" you might ask them how they define the best before buying?