It is all about personal taste. Not a big fan of Carrera Safaris but they do have a look all there own.
The Persols come in multiple sizes. They also have a meflecto temple. The biggest complaint I hear about Persols is that they slide down your nose if you do not have a perfect fit. This is often due to the meflecto temple which reduces side pressure which can be good or bad depending upon the overall fit. I have a pair (they are not 649s) and I love them. Very well made. Glass lenses that do not scratch easily (but will break). Mine are brown polarized. Many Persols are not.