If Calvin Coolidge and Herbert Hoover had been successful, the Republicans would have placed them in the top 5 Presidents in U.S. history. These guys held the exact same policies as Reagan, except Hoover changed his beleifs when he saw that some of his Republican economic policies were hurting the United States. My point is that we judge our Presidents by things they had no control over. Reagan didn't create a good economy by lowering taxes. That's a myth beleived by people who think lowering taxes has major effects on our economy. Our best economy was during the 1960s, when taxes were at 70% or higher. There are other factors that effect our economy like the availability of credit, war and the regulation or deregulation of certain areas of our economy.
This one, also many people fail to realize that the policies of a president often don't have their full effect until after their term has expired.