I am thinking of buying a Submariner, but I am concerned that it may be to Ostentatious. what do peolpe think are they too bling?
Not 'bling' so much as 'recognisable'. Probably the most recognised -- and copied -- watch in the world. Not Rolex's fault. It isn't the be-all and end-all of dive watches by any means, but its pedigree and build quality speak for themselves. Therefore, so as long as you are buying one because *you* really like it, and prefer it above anything else out there, go for it.
One main advantage: you can probably sell it at negligible/no loss very easily if you change your mind. There aren't many watches that that can be said for. But this should not be -- repeat, should not be -- the prime factor in purchasing one in the first place.
Sunnie