Sleeping system/collection simplification

I live in Michigan and have 4 bags.

35f 20f 0f -25f, I don't think I could ever get away with two.

Why not a 2 bag/quilt system instead of 2 stand alone bags/quilts?

With a 30* quilt and a 10* quilt I can stay warm to -20-25*F by combining them. My personal two bag system is a 30 and 50 and i have a 20 and 40 system for my wife since she runs colder. When needed I can steal one of hers to use with one of mine for an even colder combo but a 30* + 10* would cover everything you're talking about.

-Tim

Just a note, if you're going to go with Tim's suggestions, make sure that the lighter over quilt is made out of synthetic, especially if you're using this for more colder weather. Otherwise, if you have two down quilts, or a down bag and a down quilt, the moisture will likely condense and freeze inside the top down part, which is more of an issue than in say an Apex quilt.

Even better yet, in more extremely cold temps, also combine with a VBL. With a VBL, you may be able to get away with using a two down whatev system.

For cold weather systems, i like sewing some light weight, highly wind resistant fabric to the bottom of a quilt. I've found it makes it easier to keep out drafts during those extremely cold, -F temps (especially if also very windy). Doesn't add much weight or bulk–i like M50 for this purpose. The fabric/quilt is still wide enough to get in and out of easily, but not quite as easy as a regular quilt.

Thanks for the insight guys. Combining the 15d and 32d bags hadn't really occurred to me – that's a great idea. And I always sleep in a VBL for multiple day winter trips, so that'll work.

of course, combining your two existing bags cold be problematic if they are both slim cut. Would be best if the outer one is wide cut and the inner slim cut… otherwise, things could be a bit tight.

Billy