You were cold with the Etherlite Extreme? I just bought one for my wife so that's not good news, she could sleep in a 0 degree bag in our bedroom at home with the heat on 72.I’m going back to the XTherm. It’s not the most comfortable pad for a side sleeper, but the warmth, weight and packability are outstanding.
I found the Exped 7R to be less comfortable than the XTherm, and the S2S Ether Lite Xtreme was a cold pad for me (with a quilt and temps in the mid teens).