There is not a whole lot out there as far as reviews. I believe the Timmermade Coati is the only one out there. But basically there is a 6” flap of fabric at the quilt opening to seal off drafts. You manipulate it with your hands and tuck it under you and your body holds it in place. Or add shock cord to the channel for edge tension like the offerings from Nunatak, UGQ, or Katabatic. But as I understand it from Dan, the skirt quilt edge tension is better as the tension is applied to the skirt, not a down chamber, which can compress that down. One of my favorite things about it is getting the neck opening snapped closed. On my other quilts, I always have a hell of a time with this since the quilt is strapped to the pad. With this, you just snap it in front of your face when you’re outside of it, and slip it over your head. FWIW I also have a Katabatic Grenadier for winter and that thing is amazing too. Seals out drafts so well and is ridiculously lofty. For anyone who doesn’t want to wait weeks and weeks for a quilt I would quickly push them in the direction of Katabatic. I have heard the Timmermade lottery is extremely difficult, but I somehow managed to win on my first try.
As others have said, the Katabatic is the choice. However the Katabatic is comfort rated, so an EE 20 is like a 30 deg Palisade. I am not familiar with PCT temps but you may be able to get away with a Palisade. I sleep warm to 20 on a CCF pad.
but that 40\* nunatak quilt has almost as much loft as most mid-tier 30\* bags. Nunatak, Katabatic, and Gryphon Gear are known for having much more conservative ratings on their bags.
Someone ditching their 30 EE or Zpacks quilt for a 40 degree nunatak quilt is really not losing much sleep insulation. You throw a puffy into that equation and now they are carrying MORE down than they did before.
all of this sidesteps the biggest hole in OPs logic though: The reason people ditch the puffy and just get a more conservative sleep system is it is objectively lighter. If you don't need the puffy jacket except while in your quilt, it is more efficient to just put that down in the quilt.
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NEMO
Disco 15 Series
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Spacious for side sleepers; bulky, temp rating optimistic.
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