Thats like asking what do you like, Chevy or FOrd???
Thats just one of those questions that you will get split right down the middle...
The PRO-Diaphragm people are goin to say that they are better for cold water and that the inside stays alot cleaner, meaning less cleaning (and easier for the tech servicing your reg, not too much time in the ultrasonic). And better performance at depth... Which by the way, the deepest open circuit scuba dive EVER done was using a DIAPHRAGM regulator (actually alot of them).
The Pro-Piston guys will tell you that the newer pistons work just fine in cold water, cuz they got this new fandangled thang called a thermal isolaater protectur thingy that'll just kinda set there and portec that lil ole piston... Also, they are a fail safe design, which means that if they fail, they fail open (freeflow). If you have a failure of the diaphragm on a D reg, they fail CLOSED, which means, uhhhh, sorry no air today bubba... And they will also say, pistons are more rugged and need less tweaking and tuning and are a workhorse reg...
I say, get a diaphragm... I HATE piston regs...
Thats just one of those questions that you will get split right down the middle...
The PRO-Diaphragm people are goin to say that they are better for cold water and that the inside stays alot cleaner, meaning less cleaning (and easier for the tech servicing your reg, not too much time in the ultrasonic). And better performance at depth... Which by the way, the deepest open circuit scuba dive EVER done was using a DIAPHRAGM regulator (actually alot of them).
The Pro-Piston guys will tell you that the newer pistons work just fine in cold water, cuz they got this new fandangled thang called a thermal isolaater protectur thingy that'll just kinda set there and portec that lil ole piston... Also, they are a fail safe design, which means that if they fail, they fail open (freeflow). If you have a failure of the diaphragm on a D reg, they fail CLOSED, which means, uhhhh, sorry no air today bubba... And they will also say, pistons are more rugged and need less tweaking and tuning and are a workhorse reg...
I say, get a diaphragm... I HATE piston regs...
