Hello, I'm looking to get new sunglasses. I sometimes wear glasses, like the one's below (size 49): My face is oval, and those glasses look good on me. For sunglasses, I'm considering Persol 714 sunglasses. Many SFers say that size 52 sunglasses are the lowest size a man should go. Since my glasses are size 49, would size 49 sunglasses be perfect, or should I go with size 52 Persol sunglasses?