A stellar, ultrahigh airflow performer, SCUBAPRO’s MK25 smoked the ANSTI breathing machine when it was tested by ScubaLab. In fact, the more we stressed this reg, even down to extreme test depths, the better it performed. It is a balanced piston design with five low-pressure ports mounted on a swivel turret. The sharp-looking A700 second is now available in a new Black Tech version with a titanium nitride PVD coating that makes it more rugged, scratch-resistant and even more durable.