jonnythan:If you decide to keep the Apeks, don't get a din-yoke adapter. You can have the first stage retrofitted by replacing the DIN adapter part with the Yoke adapter part.. shouldn't be much cash at all.
Personally, I'd decide which I could probably sell for more cash and keep the other one
Actaully I would advise going with the Yoke adapter. I have several Apeks Regs all with DIN connections. However, if I go south I just take my yoke adapter along and if DIN tanks are not available I just screw on the adapter and I am all set.
If I am in Coz for instance there are HP steel tanks with DIN valves available so I can go either way.
I would keep them both, they are great regs.
Gary