One Person Brake Bleeding Showdown: Which Method Works Best? Vacuum, Reverse, Check Valve, or DIY?

If you find yourself alone and need to bleed brakes on a car, which method do you use? We demonstrate 4 common methods and give our 2 cents on which methods we like, which ones we don't, and why. Disclaimer: we allowed all methods to gravity bleed until we weren't getting air out after each testing method.