2. The rest of the week was around 10*, but I did not notice a difference. And that was in a floorless shelter on a cot with no pad underneath me and without a stove. I am a warm sleeper though. Again, I am not insinuating that this is as good as the other bags mentioned. It was just an option at another price point. I think for $150 it is a very good bag. I believe the OP stated he is willing to spend the money, but for someone else who might not have $750 to spend on a sleeping bag, I think this is a good alternative.
Unfortunately, there are a lot of people like myself who consider ourselves "gear junkies" but just don't have an unlimited amount of disposable income to purchase the highest end everything.