Hey everyone. Im considering picking one of these up from Costco. I'm curious to hear how warm it is from people that have used it. Its rated at a R value of 6.5 but that isnt using the new R value standard so Im concerned its not accurate. Looking at using it Colorado 2nd and 3rd season with a 0 degree bag and possibly a Thermarest z lite sol. We will be in my SO Redcliff with stove. Thanks for any feedback.