As of twenty hours ago, it is. Thanks! I wasn't prepared for how much I'd like it after spending some time with it on the wrist. I've guess been subconsciously pining for one ever since I met an ex-Patek Philippe watchmaker who had moved to Norway to work with remotely operated subsea robotics, and who was wearing a 4130-movement Daytona.
Sizing is a personal thing, but I'm now down to zero watches over 40 mm and I'm an ex-rower with 200 mm / 7 3/4" wrists. The 116520 is at my maximum shininess tolerance so 40 mm is definitely as big as I'd want to go with the design, or I'd risk continual magpie assaults.
I've tried on the 43 mm 5712R (absolutely gorgeous) and I'd agree that it wears similarly to a 40 mm Daytona due to the slimness and shape. Lovely, lovely watches, those Nautili.
I gave the current GMT II another chance, and decided that it was still too charmless and Grim-Reaper-like, despite the quality. It just doesn't suit my style — too modern.
Oh - the 116520 is new to you! Congratulations! It really looks good on you - wear it in good health!
I posted earlier in this thread that I was looking at chronograph types, and was looking at either the 116520 (or 16520 if I can find one) or the Omega Speedy Pro with a display back. Still haven't decided, but then I haven't pursued this with the zeal I applied to my previous acquisitions. Thanks for sharing your perspectives. I will probably stick to a 40mm 116520 if I end up going in this direction.