Hi guys, Actually the Proton Metal 12 is a different regulator than the limited you have Gmanstan. The Proton 12 is essentially an MR 12 which is a balanced diaphragm 1st stage. It is in the lower range of pricepoints for our 1st stages, however pound for $ it is absolutely a fantastic 1st stage and bullet proof. The proton metal 2nd stage is going out of the line for 2012, however it's been a great 2nd stage for the last 10 years or so. The great thing about this combination is you get a somewhat entry level price 1st stage with a higher price point 2nd. The metal 2nd is more durable than polymer (plastic), better in cold water than polymer, and condenses slightly internally which provides a nice moisture (decreasing dry mouth). We created this set up as special opportunity for our retailers. It was never part of the catalog, yet at the end of the day both components were being used with different 1st and 2nd stages, so they are both great on their own merit. I'd go for it if I were you.
I hope this helps!
P.S. Nice lingcod Gmanstan. Big one.. I see you are in the Bay Area, do you have a LDS that you call home?
Best regards to you both,
Zak
