Hatul:
This discussion is similar to the argument about which automobile is best, based on rated top speed. One car can reach 180 mph, the other can reach 120 mph. Which one is 'best'? For the vast majority of driving conditions around the world, it doesn't matter.
Almost all of my regs (and all of my tanks) are DIN. My first reg was DIN. I prefer DIN. And, I would be delighted if the world was entirely DIN. But, for recreational diving yoke valves and regs work just fine, irrespective of the statistically higher (but functionally meaningless) possibility of an O-ring failure, and arguing about which is 'best' seems . . . .
If you are going to Bonaire, you can spend your time seeking out the few places that have DIN tanks available (and Buddy Dive was NOT one of those as recently as last September, even though they have been saying for several years that they were going to add some tech equipment to their inventory). Or, you can spend your time diving with a yoke tank. It is up to you, but I prefer the latter. The first three times I went there, I took a DIN-to-yoke adaptor. I don't really like them - as you said it is literally a pain in head for BM diving. The fourth time, I converted my DIN single tank reg to yoke (took less than 60 seconds) before leaving, and back again after I got home.
I don't think the availability of yoke valves in the Caribbean has anything to do with not 'wanting' Europeans to dive there (and I usally see a lot of Europeans diving when I am on Bonaire), rather it is the demograhic mix of people that actually come there, and what they are more likely to dive. If there was any sense of business really being lost because of the lack of availability of DIN tank valves, I suspect more would become available.
But are there any advantages to DIN or special need for it? I've always used Yoke style myself. There must be something...I'm amazed after all these years, they haven't standardized to one system.
