My 20* Yeti weighs about 13 oz., vs. 11.6 advertised for the new Zpacks; 6.5 vs 7.6 oz of down; 800 Activ-Dry vs 900 down. 2" baffles vs 2.5" "loft height." Yeti's 40 X 46; Zpacks is 46 X 52. $190vs $310.
On the other hand, being 6" wider and 6" longer ought to make the Zpacks U/Q fit loads of different shapes of hammock. I'm thinking 78" 20* version at <17 oz and $365 is a pretty sweet deal… And if it doesn't work with my XLC I can prolly all it here or on Hammock Forum and only lose a couple bucks.
Just gotta find a way to pull it off without my wife finding out ;-)