First and second stage regulators for reliable air delivery at depth.
Apeks
Apeks XTX50 DST
$600-$800
Aqualung
Aqualung Leg3nd
$550-$750
Atomic Aquatics
Atomic Aquatics T3
$1,000-$1,400
Cressi
Cressi MC9 SC/Compact
$250-$350
Hollis
Hollis 150LX/DC7
$450-$600
Mares
Mares Abyss 52X
$500-$700
Oceanic
Oceanic Alpha 10 CDX5
$200-$300
Scubapro
Scubapro MK25 EVO/A700
$800-$1,100