The Dive Rite necklace you prefer is far superior to the Manta because it is adjustable both for tension holding the second stage so it wouldnt come loose so easily and around the neck so it doesnt dangle in the field of view.
Yup, exactly.. it's great! A much better solution than the Manta - I have tried those, I agree, they don't hold the reg as securely...
I do have a question about the Dive Rite necklace for you. The Web page indicates it is made from 3/8" bungee, but it looks much smaller in the photos. Is that what yours measures?
The reason I ask is because the Manta necklace rubs my lips on an Atomic second stage and measures a little over 3/8". The instructions under make your own necklace on your link recommends 1/8" bungee, which would be much less crowded.
Yes, I know what you mean... That must be a typo on the Divegear Express page, it certainly isn't 3/8", you can see it in my photo. I think that if I were to actually deploy it, I would just pull it out of the necklace if it was hitting my lips...