CCR diving is so much easier than OC diving. I sometimes have to wonder why anyone even bothers with OC anymore. I find myself using high helium mixes, even in shallow water, just because I can. Buoyancy is so much easier, it's basically set it and forget about it. I'm starting to lean towards to camp that OW certification should be taught on an RB so silly OC habits don't get in the way. Safe Diving and welcome to the silent world.
Lemme see, maybe COST. Just tossing that one out there.