FDR was the president we needed for the World War. But as for the Great Depression? He was a disaster. The programs he championed prolonged the depression, not solved it.
As to Reagan, I wouldn't consider warning the American people about Russia a "Red Scare". His words and his actions brought them to the bargaining table.
Reagan never promoted mandatory school prayer, but what's wrong with kids praying voluntarily?
Those striking air traffic controllers deserved to be fired for endangered public safety.
Trickle down economics brought American prosperity.
Reagan didn't start the War on Drugs, but it's a war that still needs fighting.
As to AIDS, it didn't really get much publicity until the mid 80s. And did you remember that C Everett Koop, Reagan's Attorney General, promoted the use of condoms by gay men to lower the risk of AIDS?
FDR was a great wartime president, but Reagan was the president we needed for the 80s.