I worried about what I was going to carry based on weight for years. If you're going to Colorado there are a few outfits that will rent you llamas to make your life much easier
I've tried quilts and not really a fan. I mostly use a WM Terrlite. I think its 25 degree, and I have a wide long so it can provide more coverage similar to a quilt
Ive shot GT Pierce for a long time and on occasion think about going back to a full size XT shaft. As others have mentioned the weak point is the insert/component system.