As a preface, I have owned Sea Dwellers, Subs, Super O's, Steelfish and SMP's. This is the first time I have ever even seen a Doxa.
First, it feels and looks more robust than any on the above list - probably due to the extra 40 grams or so, and the extended retro style case.
The bracelet is a work of art. It has the 5 row styling of the Breitling Pilot, carries the same guage of thickness from lug to buckle and has argueably the cleverest clasp arrangement I've ever owned.
The lume is bright enough to read by and the indices and hands can be seen clearly by 50 year old eyes with a quick glance.
Add to all this the 2892 movement, a clear equal to Rolex's 3135 but repairable by just about any qualified watchmaker, and you have a definite long term many year tool.