Enlightened Equipment - Enigma

Enlightened Equipment Enigma 20F, Tremarest NeoAir XLite (go for XTherm if you want warmer, but XLite is enough). Wouldn't use a 30F bag if temps can get low enough. I basically use this kit in PNW in those temps you listed. I just wear a puffy and fleece leggings on sub-freezing days if I need a bit more warmth, and it's nice to anyway since climbing out of the bag does not feel cold if you are not naked.

I use 20F quilt in summer in PNW, in June I would take it up to 6000 feet. Enlightened Equipment Enigma 20F would have you covered for $256 right now. Get 10F model and a draft collar if you want a bit of extra warmth security.

Everyone should avoid EE like the plague. Shure, they work fine enough, but their quilts have the most basic design possible (no differential cut, no edge tension control and super long U-shaped baffles that promote down migration and cold spots), are limit rated and quite expensive for what you get. They also own a tactical gear company which may or may not matter to you. My 20F EE quilt is a straight up piece of trash next to my 20F WM Alpinlite. I estimate that to get the same performance from EE I would have to go with a 0F bag and dedicated head insulation, at which point t somehow WM is both lighter and cheaper while also being light years ahead in terms of design and quality.

When you need more warmth you can layer a second quilt on top. I have an Enlightened Equipment 20 degree quilt and I add a summer Big Agnes synthetic quilt when I winter camp. I can also use the synthetic quilt when it’s over 60 degrees as a standalone.

Another thing to consider is that enlightened equipment quilts are known to be a little optimistic in their temperature ratings. Their vertical baffles are also prone to down shifting and leaving dead zones. I love my enigma 20 deg but below 30 i need to start layering up or sleeping cold. The switchback is great down to about 35 for me, but most of the time if I expect colder nights I bring a pad with a higher r value. It makes a huge difference, both with a sleeping bag and a quilt, since the down underneath your body does not insulate you in a sleeping bag. My experience with sleeping bags is that if I ever roll over the bag rolls with me and the crushed down is now on top letting me get cold. I sleep much warmer in a quilt, due to tossing and turning and the quilt not moving with me, you just have to learn how to set up your pad straps properly. If you’re in the market for a new bag, you may consider Timmermade’s hybrid bags. They are a quilt with an actual bottom like a sleeping bag that just isn’t full of down. So you get the weight savings of a quilt but the draft protection of a sleeping bag. Downside is dealing with the Timmermade monthly lottery to order, but the temp ratings are also really bomber!

I prefer down sleeping bags with a correct r-rated sleeping pad for the right season. REI makes really good down bags. In the summer I use an enlightened equipment 20 degree quilt. I can take the quilt from near freezing to ambient temperature

I think it's because they were good value back then, but their price has crept up to Katabatic, Nunatak, etc. Still worth it if you them on sale though. I had one of their Karo baffle quilts that was severely underfilled and it would not keep the down in place. Replaced it with an Enigma and it ways also underfilled for the rating and sent it back to get down added. Eventually replaced the Enigma with a Nunatak Sulo and had zero probems with it. They are also the company Defense Mechanisms making tactical gear, and some people might not like that.