In reply to purplemonkeyelephant:
I ended up with a Haglofs - something like the Women's Roc GTX Jacket but can't remember exactly.
It's been good and fits well. Not too skinny in the torso. I'm a size 10 and can get a down jacket it underneath it in an emergency, I bought a size small. It's equally fine with not much underneath and haven't noticed the arms to be an issue - i have a neutral ape index.
You can often get a bargain on haglofs stuff, look at sports pursuit for starters.