What is the best design? The design which invigorates you. Design which pumps you up, and get you going. Perhaps this is why we also love red cars, as the color red invigorates us. This is why we also are attracted to women and red dresses, as it sparks our erotic invigoration. Apparently even men who were the color red or seen as more attractive by women.
Therefore when it comes to design, or aesthetics, Focus on what invigorates, and excites you, rather than design which is stale, boring, or depresses you.
Also with music, literature, and films, only intake and consume that which invigorates you.