Thanks for the reply everyone. Just in case im buying new, will the mk11 and mk21 be an ok stage reg? Consider routing too? Match it with c370 or c570? Id prefer it to be balanced
why mk21? I heard they have similar internals as mk 25
Why c570? Similar to s600 internals?
Whoever is telling you this has NO IDEA what they are talking about. The mk11 is a sealed diaphram. The mk25 is an unsealed piston. They are both scubapro and regulators, the similarities end there.