Excellent for my use
My wife and I both have 20 degree revelations that are fantastic that we used last season in the Sierras. We were going to northern Death Valley NP first week of Feb 2018 and knowing it can get cold out there we purchased a 20 degree Itasca in case we wanted additional warmth. This worked out great! We do 4x4 adventure camping so we can bring more with us unlike backpacking. For this we did not need to get a heaver Revelation for very cold weather, but use our 20 degree Revelations and if needed, pull the 20 degree Itasca on top of us. Works great!! Here is our setup. A Thermarest Dreamtime gives us plenty of insulation from ground cold, a 20 degree revelation, I did not use the straps this trip. Then, in the early morning hours if we want more warmth, we pull the Itasca on top. I only had a light merino wool t-shirt and jeans for sleeping. Be aware that with the revelation you get your warmth when you use the elastic straps, but with this setup, not required...It would need to get into the upper 10's before I would need the straps I believe. Temps we experienced on this trip were lower 30's and like I say, no straps, light t-shirt, jeans all that was needed. Quality of the products I purchased are top shelf, I highly recommend EQ.