Sorry for resurrecting this thread, but here's a familiar question. I've been eyeing Persol 649 (didn't like it at first, but it grows on me), but no eyewear shop where I live carries them anymore, so no chance for an actual try-on . I have a big skull, like, BIG even for caucasian standards (I'm SEAn, 5'9"). Just for reference, AO Original Pilot 55/20 seems small for me, as well as Persol 2720-S 57/16. AOOP 57/20 fits well and so does Persol 2857-V 54/16 and Persol 2244-S 63/17. Since many of you said Persol 649s are big/fit large, should I go for size 54 (easily found on 'bay), or 56 (almost non existed though listed on Persol homepage)? Thanks and great Friday to y'all.