My perfect Seamaster is the Chronostop caliber 865. If I posted this in the WRUW thread every time I wore it, you'd all be tired of seeing it. Despite it being larger than my normal preference this one fits perfectly. C-cases have short lugs so they don't overhang the wrist. Plus, it's a model you don't see that often.
Runner up as far as comfort is the sparkle caliber 751.
For me, my Soccer Timer. To me the Seamaster is not the best dress watch. The Seamaster is a working watch with complications. Omega has many fine dress watches, but not perhaps the Seamaster line.