MarineMaster. without an doubt. you actually get an GrandSeiko movement in monoblock case, watch is hand assembled in the same factory that makes GS line, even the lume is hand applied. watch is not big at all (it is actually around 43 mm) and it sits great on your wrist. bracelet has ratcheting clasp, case is a piece of artwork with brushed and polished surfaces...
A friend of mine owns it and he had to peel it off my wrist when i had put it on., I would not let it go. only downside (for me it is not a downside at all ) is a lack of sapphire crystal. but that is a legacy of Seiko divers watches (Seiko made divers watches when most of the todays "premium" Swiss brands made handwind low end watches with ebauche movements) - when you break it , you can replace it at low cost. Tool watch at its best. Hell, If Rolex did not stop evolution of their Subs in 60-ies (nad they are basically the same watches as they have made them in 60-ies) todays Subs would probably look like that.