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

Running these analyses costs money. Buy through my links to help keep lights on! I may get a small commission.
I agree. After being really cold most of my PCT section hike in 2019, I don't use my EE enigma below freezing. I got a western mountaineering versalite in 2021 and love it for cold weather.
As a slender, older man (65yo) I get colder than I used to, so perhaps I can address your issue anyway. You could call me a thin younger woman in terms of physiology / sleep comfort lol. Firstly, I find the Neoair Xlite to sleep cold even at around 5C. On the other hand, as others have stated, the XTherm is incredible. I suspect part of your problem is the pad. Second, you really should have a bag rated in the -7C range (at a minimum). That's pretty much the standard temp rating for a three season bag (5" - 6" loft). It's possible someone like you should have something even slightly warmer, though I see no reason for a bag warmer than a -12C rating. Thirdly, reading a couple of comments here about fill power - it has nothing to do with warmth. With equivalent loft a -7C / 550 fill bag will keep you just as warm as a -7C / 950 fill bag. The 950 bag will just be lighter. I've been using down bags since 1975 in temps down below -25C. Apart from synthetics, I have probably owned at least a dozen down bags, and currently have four (and one Nunatak Quilt on order!). My bags are all Western Mountaineering - Summerlite, Superlite, Versalite, and Lynx. The Superlite (-7C) is my go-to for most things here in the central Rockies, with the Versalite (-12C) coming into play for shoulder seasons. I'd recommend you get a 10F to 20F (-7C to -12C) bag and a warmer pad.
The over-bag is about 1lb, so the combo is 40oz, around 8oz heavier than the Versatile. I've been considering the Versatile so I'm glad to hear it's working for you. That might be the way to go for me.
It sounds like the Versatile is the way to go for me. I like the idea of some extra overfill too!
WM sounds like the way to go.
I would highly recommend Western Mountaineering bags. I have 2 of the Versalite models. One for me and one for my wife. Mine is the 6' 6" version and I believe is right at 2lbs. It packs down a little smaller than a volleyball with a sea to summit e-vent compression sack. Fwiw, I bought mine "used" on ebay with the tags still attached for $540 and my wife's was brand new on campsaver or moosejaw for right around $500 on sale. Unbelievable bags made in the USA and made to last.
Definitely a buy once cry once item for me! We spend a lot of time in them each season and I've never once regretted buying my versalite 10 or felt like I needed more bag.
This is correct synthetic on the outer layer. Been using this setup for five years now and it works flawlessly. WM Versalite with a myog apex over bag. I’ve done many winter traverses of glacier and the bob using this.
[EE are racist/fascist](https://www.reddit.com/r/Ultralight/s/afJAagvKix). It’s worth noting that they promised to course correct but I just checked and one of the posts that they were specifically called out on (with screenshots) for interacting with racists is still up. That aside, the convert is probably the worst quilt you can get. For one, the baffles are super long, which will promote down migration and cold spots. It does not have differential cut, which boosts performance and down stability (and at almost $700, should come as standard). EE products are also limit rated, so you better go at least 10° colder. A 0°F Convert, x-short regular is 800g and $670, which becomes 880g and $720 if you throw in a hood. A short WM Versalite is lighter (850g) only $35 more ($755) and is considered among the best bags you can buy. There is absolutely no reason to even consider EE.

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
Ranked #1
Enlightened Equipment - Revelation APEX

Ranked #1
NEMO - Disco 15 Series

Ranked #1
Feathered Friends - Egret UL 20/30

Ranked #1
NEMO - Disco 15 Series