I still have my Blizzard (circa 1994) hanging around. Sherwoods are pretty bulletproof.
If memory serves, the Blizzard & Oasis are identical except the Blizzard has an additional heat sink in the 2nd stage to keep it from freezing up & freeflowing. Both are balanced regs.
I used to like the fact that the 1st stage was essentially environmentally sealed due to the positive pressure flow out the 1st stage. (Minuscule bubbles from that area.) The coldest I ever dove it was 34F water. No problems...
FWIW,
If memory serves, the Blizzard & Oasis are identical except the Blizzard has an additional heat sink in the 2nd stage to keep it from freezing up & freeflowing. Both are balanced regs.
I used to like the fact that the 1st stage was essentially environmentally sealed due to the positive pressure flow out the 1st stage. (Minuscule bubbles from that area.) The coldest I ever dove it was 34F water. No problems...
FWIW,