scubamickey
I'm a GIRL!
I have the SP MK25 with the G250 primary and the S600 on a bungee. Din first stage. I expect to have it forever. My DH has a SP MK5/109/109 and he dives with it in near freezing conditions. He's had it since he bought new as a teenager back in 1978. A good regulator will last you more than 5 years as long as you take care of it.