Both watches perform at a level that's entirely acceptable for everyday wear. Again, if the Hesalite model can meet the needs of NASA, it can stand up to the demands of everyday life. The argument between which one is technically superior mostly exists in an imagined world. My guess is that if NASA put the sapphire Speedmaster through the same tests as its Hesalite brother, it would also pass the flight qualification tests. But it will never be the first to have earned that title; that honor is reserved for the Hesalite Speedy. Aside from the visual quirks, the distinction between the two is largely philosophical. Would you prefer a watch that's as close as you can get to the one that went to the Moon? Or would you rather a timepiece that conforms to the standards of modern materials? And that allows you a view to a mechanical marvel that is a chronograph movement? Sometimes the philosophical waffling between two ideologies is far more stressful than just sitting down and choosing one. The good news? You can’t go wrong either way.