I am 75% committed to an early April start and the last gear item I need is a cold weather sleeping bag. I get very cold so I am unsure of what temp bag to get. I have a Kelty Cosmic Down 20* bag that I do not like. I was freezing in 30* weather with a Thermarest Neo Air XLite in March so I am thinking I either need to go lower temp rating or add a liner to a 20* bag.
Looking at the Marmot Plasma 15, REI Igneo, and Sierra Designs Zissou 12 among others. The Sea to Summit Reactor Thermolite Liner looks like a good additional 15*.
I am trying to go as light as I can without sacrificing comfort/warmth.
Any other suggestions or ideas?