I tend to sleep pretty warm and was looking at options for a warm weather bag. Currently the only bag I own is a Marmot Sawtooth 15 degree down bag. I was looking at other warm weather down bags or quilts, but to be honest I don't know if it is that reasonable. I live in Georgia where our spring and fall are pretty short, I would say 9 months of the year are either really hot or pretty cold (at least by Georgia standards). When sleeping at home I generally will sleep with just a sheet unless the house is below 60 degrees.

That's why I am considering just getting something like a Sea to Summit Reactor mummy bag liner. It gives me a few more degrees of warmth and keeps my bag clean for cold weather months, and I don't see any reason that I couldn't use it for my summer bag rather than going and spending a couple hundred bucks on a 40 or 50+ down bag that will still be too warm for most of the late spring early summer here. Has anyone else done this?