Where I mostly camp, late May-August is brutal. Lows average in the mid 60s, but can vary from lows at 60-75. For when my wife goes, I have a summer coupler from WM, as well as an Alder MF bag. The coupler + 1 bag saves weight. However, this bag is too hot for that weather. Without the bag, the coupler is useless.
So what are some options for my wife and I for hot weather, and then also options for when I go solo? The UL 60 quilt looks like it was popular but no longer around. What are some other options? For myself, and then other options for both?