OceanicDelta 5 (2nd Stage) + EDX (1st Stage) | Breathing Regulator for Scuba Diving | Strong Cold-Water Performance | Available in Yoke or DIN Version | Yoke, Black

Easy breathing, free flows a little more than I'd like at the surface, but that may be something I'm doing wrong. Now, it doesn't breathe as easy as a friend's Aqualung Legend LX Supreme or ScubaPro MK25Evo/A700, but it's not supposed to. It breathes fine at depth for me, and I don't feel like I'm working to get life-sustaining air into my lungs. I need to mess with the Venturi and airflow functions to get it perfectly tuned, but it will come.