
NEMO
Disco 15 Series
Spacious for side sleepers; bulky, temp rating optimistic.

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I absolutely love my Katabatic Flex 15 goose 900fill. The quality, the warmth, the functionality is all top notch. Worth the money.
Yes for Katabatic quilts! I get a lot of use out of my flex quilt 15 degree with overfill. I love zipping the bottom part to a mummy and leaving the top loose like a blanket. I’ve used it 20-50F overnight temps.
When I did the Salkantay at the end of May a few years ago I brought my 15 degree Katabatic quilt and was never cold sleeping. Might have slept in my down jacket one night that I can recall Edit: also did the Huayhuash which was higher/colder and also slept fine with the same setup
Echoing comments that I have not found the enlightened equipment quilt ratings to be accurate. I used to carry a 0° EE, now I carry a 15° katabatic and I'm much more comfortable, even down to temps near or below freezing. Add a warmer pad, and make sure your neck is covered by a buff or your jacket is zipped up to your chin with the hood up and you should be good to go. If you're a woman it's always worth having your thyroid checked too, especially if you are abnormally cold in other situations as well.
Katabatic flex is likely a good fit for this. Their ratings are comfort/true. Lots of very happy people with these if you do a quick search. Made in Salida, CO. Pair it with a comfortable insulated pad like Nemo tensor all season and you have a very versatile sleeping system
I was in a similar boat, I had the Kelty Cosmic 20 and paired it with a heavy liner in most temps under 40f. I was researching quilts with the intention of using them throughout Cali and ended up with the KatabicSwatch. For me the big decider was the volume the zippered footbox takes up (2-3 extra litters). I havent taken it out yet but expect to strap it down when its cold and leave it loose when it warms up and it should be fine. I read the katabics are nicer and have a construction where the down bunches less and stay warmer than a EE or Waratah, hope thats true for the premium I paid. I havent found negative reviews for Katabic

NEMO
Disco 15 Series
Spacious for side sleepers; bulky, temp rating optimistic.
Hammock Gear
Classic Burrow 20°F
Budget king; very warm but heavier than ultralight.

NEMO
Disco 30
Spoon shape for side sleepers; prone to zipper issues.

Western Mountaineering
VersaLite
Durable, very warm; premium price, too hot in summer.

Katabatic Gear
Alsek 22°F Quilt
Versatile 3-season quilt; secure pad attachment, high price.

Ranked #1
NEMO - Disco 15 Series

Ranked #1
Kelty - Tru.Comfort Doublewide 20
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Enlightened Equipment - Revelation APEX

Ranked #1
NEMO - Disco 15 Series

Ranked #1
Feathered Friends - Egret UL 20/30

Ranked #1
NEMO - Disco 15 Series