I plan on getting a Polartec Neoshell Hardshell this season. Leaning toward Flylow or Colorado Freeride Systems jackets. Skiing here in the cold Northeast, would need to be warm, although I don't think I will be skiing in any below zero temps. Doubt even single digits. Should I get something breathable, since the jackets are breathable and have pit zips? I like the Patagonia Nan Puff jacket, yet they are windproof and don't breath. OTOH, their Nano Air jackets ARE breathable, which I might buy for casual wear anyway. Anyone out there wear the Nano Puff, having feedback?