Ok here is my take. Bare in mind I come from a place where in winter if it gets below about 45F it's bloody freezing. I got a 30F quilt from EE and I bought a size larger and wider quilt in 50F for warmer temps. They fit inside each other and use the double straps for winter. Together they give you 10F and the flexibility of using one or both in the early part. It snowed on 2 of the first 3 days this year, started 12th Mar, it was 95F when I left Australia. I was warm and toasty with both then and on warmer nights I just used the 30F one. together both came in under a kilogram, 2 lbs. Some people don't like quilts, some have never tried them, I move around a lot in my sleep and they have been the answer for me. A good insulated pad is a must for cold weather if you use quilts.