Yoke will eventually go the way of the Dodo.
Yes and in the long run we are all dead.
I was responding to the assertion that yokes are somehow unsafe, which statistics show they are not. If the o-ring extrudes it is an annoyance, if it is on a rental tank the dive op should change the ring not the diver. The dive op should have also inspected the o-rings prior to renting a tank, but that is in a perfect world.
So you point of view is not valid because once an adapter is used there is NO benefit to a din fitting. You are basically trading off the probability that an o-ring may extrude against the certainty of banging your head against the first stage. I don't see where rotating the tank slightly will help and lowering the tank could affect trim.
The fact is that most if not all dive ops in the US will have yoke tanks. Some will have DIN tanks available or tanks with convertible valves. If the OP is SURE that most of his dive ops have DIN tanks then he should by DIN. If not, I know they will have yoke tanks.
As for cost, Din fitting for a reg is around $50 to $70 dollars. I am not sure of the price of a Hollis. A Din to Yoke adapter is usually around $30 to $50, so the cost difference is only about $20 or so. Not really significant in the greater scheme of things.
Given that these Hollis regs are on closeout for $199 and a Hollis Octo costs $129, it may be beneficial to the OP to buy both a DIN and Yoke version and a octo length hose. It would probably cost the same as a reg set, octo, and adapter and would give him a spare first stage.
---------- Post added April 21st, 2014 at 08:22 AM ----------
Am I under attack? lol
I've had a tank blow an o-ring 15 min after setting my gear up. Luckily I hadn't jumped in the water at that moment. There are several points of failure and if I can upgrade one, then why not? The DIN is still a point of failure, just higher rated. Also, the most dangerous type of diving doesn't use Yoke, probably because there were failures.
Technical divers use DIN because they are using high pressure tanks that exceed the stated capacity of a yoke connection. Also the knob on the yoke could create a entanglement hazard or get damaged in an overhead environment. However using a DIN to yoke adapter also creates the same hazards.
I am not attacking you but o-rings don't just blow. If your o-ring blew then I am sure that neither you nor the dive op inspected the o-ring, which most divers are not in the habit of doing. Another reason is the yoke was not attached to the tank properly, it sounds foolish but it can easily happen on a rocking boat.
