The Republic Thunderbolt, also known as Jug, was the largest, most expensive and heaviest fighter in aviation history to be powered by a single internal combustion engine. It was one of the main fighters of the United States air force during World War II.
Canadair Starfighter - Royal Canadian Air Force (RCAF), Canada - killed more pilots (avionics & design) than any other widely used production fighter. barring that - the most sensational post war fighter! 'The Right Stuff!