The CE ratings are different for men and women. Also, whether the stated temperature is comofort or extreme differs from different makers, just something to keep in mind. I have slept in -32 with a bag that had -20 as an extreme. I obviously survived, but wouldn't do it again, my point is, the concept of extreme can be discussed as well.
Aalpkit are good. As are
www.roberts.pl. Roberts only sews when they've got the order, every sleeping bag is a custom. Down is what you want if you want low weight, and longetivety.
The linked bag seems incredibly heavy for what it is. And probably huge. And why boast a feature such as breathable lining? Doesn't all bags have that? Treat yourself a down bag instead, you're probably worth it.