I have been testing this jacket in the California winter...I know, it might sound like a joke, but I have tested down to 13C (55.4F) and this jacket can keep me very warm without having to use any base layer, just a regular T-shirt. Eventually I will use it as one of the layers when we go to Alaska in March, I will update this post then. I am 5'9", 174 lbs and medium fits snug, but well. Perfect for layering or to be used by itself.
Pros:
  Super light, 30.5g (1.075856 once), with the case!
  Super compact, see pictures
  Wind and water resistant (I expected some resistance, but it is way better than what I expected!)
  Very form fitting, flattering
  The sleeves have elastic bands, making it tighter on the wrists
  It is longer in the back
  The bottom has a draw string
  It has an inside pocket, which holds the stuff bag
 The hood is well insulated and also has an elastic band. It also has a draw string on the back, to adjust to your head size
  It covers your neck
Cons:
  It probably should have less feathers under the arms, since it creates warmer spots.
  Pricey