In reply to lewismansell:
I came on here to recommend my sack, which just so happens to be the LA mountain attack 45-55 version. It's pretty square in shape which means it's not too long on your back. I'm 5'6 and it works nice for me. No shops had it in so ordered it online, although Ellis Brigham did offer to buy it in specially for me, they only had the alpine attack on their shelves.