In order to justify buying used, then it should significantly beat the North Face cat's meow in terms of price ($103 shipped) and/or weight (1020g). I'm 5'7", so want a Regular or maybe Short in some brands bag.

Also open to trade my 0 for your 20. Yea that's right, my dumb ass has two 0deg bags and nothing lighter. What i have is Marmot Never Summer 0, down, weighs ~1550g, used once and stored compressed for a total of 1 day. Probably ask you to pay shipping since usually a 0deg is more valuable than a 20?