Which is better, Omega 503 or 565?

565 has the function of quickly adjusting the date and date. 565 is the last improvement of the 5 series, and the fast jump date is synchronized with 564. The difference is that 564 is COSC level, and most of them are assembled on constellations. 565 is plated with rose gold, the pendulum is an optical pendulum made of bronze alloy, and the hairspring is a plane alloy hairspring, all of which are the most advanced technologies at that time. The 5 series is equipped with the top gooseneck fine adjustment of commodity grade. * 5 series is the masterpiece of Omega automatic watches, with a high level. The Omega Haima Series 565 movement in the early 1970s was yellow, which was a very good movement, not rhodium-plated. The pendulum is not gold plated, it is equipped with a gooseneck fine adjustment device. 565 has the function of quickly adjusting the date and date. 565 is the last improvement of Series 5.