@Plouw: Lol, CUM does have some good equipment, I have FA and K-Way hiking shirts and I find that my K-Way ones are better in almost every regard than my FA ones...
I considered buying that bag, but the comfort rating is too warm. I currently own 2 bags, a Mountain Hardware Pinole -7 bag at 1.4kg and a K-Way Alpine Cowl -2 bag at 1.8kg. Both are hollow fibre. Due to the weight I never use my Alpine Cowl any more, a -7 bag can always have its zip left undone if it gets too hot, but for non-hiking occasions I always use my K-Way bag as it is much more comfortable, and isn't ever too hot, even when its 15 degrees at night.