garyd54220
Contributor
When I'm diving OC I use either Poseidon or Aqualung Legend LX Supreme. Both are excellent in any conditions. Dive mainly in the Great Lakes where temps are routinely in the 40's on the bottom year round. In colder water I have frequently inhaled small bits of ice that build up and then fall off of the internal parts of the second stage of a Poseidon without it ever free flowing. Apeks, Hog, and Dive Rite are also fine for most any conditions you're likely to encounter. If you want to get by a bit cheaper, Sherwoods are known for their ability to cope with cold water but don't breath quite as good. Scubapro's are known around here as Scubaflow's as don't do well at all in cold water...except for the Mk17 which does fine. Just my .02
Gary
Gary