I'm so torn on the sizing! I have a 6.5" wrist that is quite flat about 50-51mm across. I had my heart settled on a 36mm but a L2L of 45mm feels small (i have an Archimede watch that is L2L of 44mm, 40mm case diam and it feels small on my wrist). so then i thought maybe the 40mm marine classic is better with an L2L of 48mm. but then it's a slippery slope because i'm like maybe i can try to make the Marine original with its gorgeous unitas movement work. but that's an L2L of 50mm so that's pushing it. Argh!