scubawally
Guest
I dive Sp regs off the coast of Newfoundland and Nova Scotia.....dont get much colder than that....I have personally dove the Mk25/S600 in 28 degree water many times with no problems regarding freeflows. I also have several Mk16's (the precurser to the mk17 without the environmental seal) that is a bulletproof reg as well.... in my opinion SP makes the best regs in the world and you cant knock the warrenty. ANY COMBINATION OF SCUBAPRO REGS WILL WORK GREAT IN ANY WATER CONDITION. In my opinion the MK5/109 balanced adjustable is the best regulator ever built....its old but indestructable.