Have a had a few but honestly I prefer other swiss brands like Breitling, Omega, and Panerai.
If you buy one consider the Rolex Deepsea which is a cool diver.
I have a couple of Omegas and a solid gold Longines that I don't really wear anymore. I am pretty hard on watches, but I love the mechanicals.
I love the classic look of the SS Sea Dweller, but for diving, I much prefer a dive computer anyway.
FFS, most days I wear a Gshock (heresy).