I'm a big dive watch fan from way back (even though I'm not even OW certified)...the timing bezel is something I use several times a day.
So here's my take on some of the posts here:
Bernhardt Sea Shark: I have one (red dial) and I think it's an OK casual watch but (IMO) it doesn't fit in this conversation.
Seiko: Grand Seikos are great watches, regular Seikos ("orange monsters" or for e.g. I am wearing a Kinetic Diver right now) are good, but they just ain't bling to most people.
TAG: I wore a TAG 2000 professional diver for many years, beat it up and down, scratched the sapphire crystal, wore the crown down to a nub - got my money's worth out of that watch - so I'm perhaps biased, but I think they have some really nice watches if you like the style. Not a watch snob watch though.
Omega Seamaster: A classic. Personally I think the whole "Bond" tie-in schtik was tacky and cheap but some people really dig it.
DOXA: I have one, I like it, so maybe I'm biased. I'm not sure if they qualify as bling but they wear nicely, are visually very distinctive without looking cheesy, and mine has gotten unsolicited compliments from strangers so they aren't a total lost cause on the bling side of things. I have the 800ti because I wanted tritium lume.
IWC has some really nice dive watches. They have the advantage/disadvantage that relatively few know who IWC is, but those that do know are really impressed. I'd take a Deep Two over a Rolex any day and I like the Aquatimer 2000 too.
Sinn: Look at their range. They go from fairly mundane to some very impressive watches (if you like the style), and they all have a really cool look to them. Sinn will probably be my next "nice" watch purchase. Note that the oil-filled model (UX) must be shipped to Germany for battery replacements (every 7 years) which kinda cools my jets but that's just one model.
A (IMO) great choice I didn't see mentioned: Longines Legend Diver. Personally, I think it's an awesome dive to dine diver. It's also not a huge amount of money on the IWC scale. The bezel isn't quite as easy/intuitive as most dive watches though.
If you want to stay in the IWC/Rolex range: Royal Oak Offshore Diver or maybe Blancpain fifty fathoms.