HOG D1 1st stage with cold kit, $174.95
HOG Classic second stage, $109.95
HOG treating us like intelligent adults and selling low cost parts kits with viton o-rings to anyone, priceless.
They do have a few bugs they have worked out, a few that may yet need to be worked out, and like any reg there is always room for improvement in the next generation.
From all that I read the 1st stage is good, especially the new D3, the 2nd stage could apparently use a redesign to tweak a few things and adjust the exhaust flapper and exhaust design in general but nothing super serious.
There are definitely HOG's in my future purchase plans. Since I was recently forced for various reasons to order the parts to totally overhaul my MR22/Abyss/Proton rather than selling them, I might wait with HOG till a next gen 2nd with a new case design comes out, though that could be awhile as I read he was specifically trying to avoid doing just that. I will likely get one for a pony bottle I plan to buy and try it out on the main tank before I get one to replace my main reg set.
EDIT: cerich actually bothered to send me an email and the minor issue I had heard about is already fixed in current production.
And those prices I stated above weren't deal shopping, just random prices i grabbed quick to do my wannabe mastercard commercial joke. Seriously though, parts and service manual availability to anyone is really wonderful to me (though they strongly recommend taking the service class they offer).