For 40*
I have a homemade quilt with .85 ounce fabric Thru-hiker used to sell. It is now my bag I use when I have to say over-night at work. It has no DWR and any condensation or dew wets out the bag horribly.
35*
My Marmut Pounder is my Adventure Racing bag or for very wet conditions. With a layer of 2.5 ounce Climashield added, it weighs 23 ounces, but has the 15d fabric that is really nice. The new version has the Astral N-100 fabric.
15*
TNF Hightail. Although it's rated for 15* it may be good for 20* but only I eat a few thousand calories before I go to sleep.
0-5*
My Home-made 2 pound quilt. I'm sure it will keep me warm down to 10*, 5* with some good clothing and 0* with a good meal.
It also weighs less than the TNF bag so if it's going to be blow 40* the quilt goes with me. It's adjustability is a lot better than a bag but the quilt is just too warm above 35*, even when wearing underwear and a t-shirt.
It does works good with a light base layer and your legs outside with the top of the bottom just draped over.
If I was going to go hiking in 0* temps, I could easily push my quilt to -10* with all of my clothing on and my Exped Down mat. Not bad for 2 lbs.
If it is going to be below 35* I will use my prolite 3 short along with 2 GG 60" long 1/8" pads. Other than that it is just a pad or 2. I will never sleep in a camp with hard ground so I have only slept a few nights that my back was stiff the next morning.
Looks like I need to make a 32* quilt though.
I think I'll actually be making a 5 ounce and a 2.5 ounce Climashield quilt since most of the hikes I do have a lot of condensation.
Well, ok, I'll also make a 32* hodded down quilt that will weight about 19 ounces.