>>45490563>>45490715A-10 is a bad airplane that was designed for an aerial combat arena a generation older than itself, and its sole notable feature, that being the big gun, is wildly impractical for its intended tank-busting purpose.
My favorite is the F-4 Phantom which was actually good at its job, and it had many jobs throughout its service. The premier US fighter of the Vietnam War that remained useful all the way into the Gulf War in the 90's. Turkey, Greece, South Korea, and Iran still use them, and other countries only retired them in the last couple years.