I am shopping for a down jacket with the following features- warm enough for the desert southwest in winter (sub zero ish....), lightweight, highly compressible, and tough exterior. It is to be used while climbing, camping, and drinking whiskey. I do not care about fancy zippers, high tech taped seams, or pockets on the arms. All I need is a really nice jacket that will keep me warm and not get all fucked up when I wear it. Any suggestions on what I should try and find? Feathered Friends seems like my best bet, is anyone wearing their lightweight jacket? Thanks for your help...