I'm not that hardcore of a watch guy, but I do have a couple that have crossed my path that are very much "me"
Marathon General Purpose Mechanical Military Field Watch with Tritium and Sapphire Glass (34mm)
This is my rugged / camping / field watch. Favorite thing about it is the size/weight and the tritium tubes and that it never needs batteries.
And the most recent acquisition, from my brother who basically moved onto something else.
Citizen Satellite Wave World Time
Solar charging, very accurate, sync via satellite.