Until now, I’ve had at least nine different regulators in my mouth since I began SCUBA diving. Some have been incredibly uncomfortable, some were unwieldy making me reposition it or bite down harder, one was a bit cantankerous but not one left with without air. Reading a lot on this subject and keeping my eyes open to all the choices on the market, it really didn’t take me long to decide upon the one that would make me happy and fit my budget. That being said, how do you know which one to buy? A friend of mine went on a dive with a brand new Mares regulator and it failed, canceling his dive. Seriously?! It was new!Before I took my first class, I felt every diver should own their own regulator since it is how you breathe. Can you trust rental gear? How often is it serviced? MORE: SCUBA: Regulator and Dive Computer