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jeditdog:If I'm thinking about becoming a Dive Master or Instructor, is there anything I should think about when purchasing a regulator? I thought that maybe this reasoning would make me want to focus on other features than just jaw fatigue.
rmannix:If you're gonna work thru a store most prefer you dive what they sell (at least while teaching), usually top of their line. Most sell to their instructors and DMs at a healthy discount.