The best Scuba diving regulators from US Water Rescue in Billings, MT. To narrow your search, click on your brand of regulator above. We carry some of the best dive regulators on the market: Atomic, HOG, Poseidon, and Zeagle scuba regulators. Please call us if you need help in deciding which regulator best fits your diving needs, whether it is recreational diving, technical diving, or public safety diving. Dive gear for public safety divers, law enforcement, and military.