There has been a bunch of discussion on this board about which dial type to choose on the Doxa that interests you.
I thought I might post why I chose how I did, as it could be helpful for those going through that process.
Bit of background-I've been collecting watches pretty much all my life. It all started with a Seiko chronograph given to me by my father in 1977. He traveled to Japan a lot on business, and he had picked this one up several years before. It accompanied me on many adventures through my youth, until I lost it in my teens.
Fast forward-I was in school in NYC, and just starting to respark my interest in watches. I started with an Omega Seamaster (not the dive watch) and moved to other vintage autos. It wasn't until I made a bit of $ after school that I got into collecting full force. My first was an Omega Speedmaster Professional-I remember looking at that online, and thinking one day I will get it, and that's all the watch I'd ever need...you know how that goes.
Once I got the Omega, I looked for a dive watch. I found Pete's site, or the Doxa site (not sure which) around that time, and found that Doxa was selling reissues of the Pro-I wanted the orange dial, but it was sold out, but they still had some Divingstars...so I got one of those.
I loved the watch, but there were two issues to me: First, the bezel was NOT painted in yellow, rather, it was the same orange as the bezel of the Pro model. It just didn't look right to me. Second, I wanted the dwarf hour hand, and saw that the 600T had it. I went back and forth for a while, and eventually traded the DS for a TGraph Sharkhunter. Great watch!
I did eventually pick up a 600T Divingstar:
While I liked it, and Doxa corrected the bezel paint issue, I had two problems with this model: First, I really preferred the 120-click bezel, rather than the 60-click on this model, and second, I didn't like the dive helmet on the face. Other than that, it was a great watch. It eventually was traded away, too, which I regret.
The next watch was a 300T Pro reissue. I realized how much I missed the case/bracelet of the 300T reissue once I got that one. I truly think that Doxa got that one so right!
However, I really missed the yellow dialed Doxas....I managed to trade to a GMT Pro, but as I already had an orange-dialed Doxa, I wanted to get the DS-a few deals later, I got one!
The things I love about the DS GMT is that it is unique among the Doxa line for having the yellow paint in the bezel. I believe that all the others have orange paint (at least the current models-not vintage). I like the dial/case combo-to me, it's better balanced than the 750T dial, which has a bit too much empty space on it (similar to my opinion about the 45.5mm Omega Planet Ocean-the 42mm seems much more balanced to me). This model has the GMT bracelet, which I prefer to the thinner one. The yellow/black of the dial, and handset is fantastic. Nice contrast, unique among the other GMT watches out there.
There is also the movement-the 2893-based GMT movement. I have found this movement to be excellent, both in time-keeping, and stability. I have a Seiko MarineMaster 300, which is another fine watch-my only complaint with that one is that the movement, although fantastically accurate, is not as stable-it will pick up a few seconds when I take it jogging, which doesn't seem to be the case with the Doxa, Planet Ocean (another 2893-based movement). The only one in my collection with better stability is my Rolex SD, which keeps the same rate no matter what-it's like a quartz watch in that respect.
So, for me, the Divingstar GMT is the best choice. It's a great addition to a collection, and also would be great for those who want only one watch (although you may find yourself wanting a dress watch, as the yellow is bold).