I bought this sleeping bag for a festival where it did me proud. I was worried about getting cold at night but I must say this sleeping bag kept me extremely toasty indeed, to the point where I had to unzip it and let some cooler air in - admittedly this was summertime but being a typical English summer it was still pretty chilly at night.
On the colder nights it was brilliant and the hood came in very handy indeed. It's not a cheap sleeping bag but not the most expensive either and I think given how nice it was to use, it was really good value.
My only complaint is that being a wriggler I'd love someone to make a sleeping bag shaped like a lolipop with lots of room for me to move me legs around in. But I'm told its not a good idea - something to do with warming air layers etc etc... Gap in the market I say.