Just purchased a Seiko SKX013 after breaking my SKX009 (i tried to adjust the regualator and bungled it). I wanted to try a mid size (38mm) and at first it felt tiny compared with the SKX009. Afte a couple of days it feels perfect. Surprisingly it feels much lighter. Amazing what a few mm difference will make. I won't go into the differences, but I am curious as to why dive watches are getting larger. I couldn't go beyond 42mm without it feeling like I had a clock strapped to my wrist, which is a shame as I like the look of the Sumo.I read the Blancpain blew the collective watch world mind when it came out at 41mm in 1953(?). But the Rolex Submariner was a modest 36mm(?) in the same year and was good enough for Bond. Are people just getting bigger or will we see watches shrink again? I have noticed a few homage watches such as the Raven Vintage offering 40mm versions.