Rings aren't everything. Just don't tell that to Brad Johnson, Trent Dilfer or Nick Foles, mediocre quarterbacks all. But they managed to capture titles as starting signal callers. It's a feat that eluded some Hall of Fame legends who never won a ring. So we're giving some shine to those who accomplished just about everything on the gridiron. That is, except for the ultimate goal. These are the best quarterbacks who never won a Super Bowl.