jason pwrote a review of Mountain Hardwear Glacier Guide Down Parka - Men's on February 2, 2016
Familiarity: I've used it once or twice and have initial impressions
Fit: Runs large
I ordered an XL at first because all of my other MH gear is XL, this this runs HUGE... and I like things baggier for the most part. The XL looked like a 2 or 3 XL. It was so large that when I re ordered I got a medium and large to try. I dont own any clothing that is Medium. I am 5'11" 195lbs. If you normally lean toward XL go L you'll be fine.
Quality is pretty good, I saw another user had issues with the main zipper, it does seem to have a little learning curve to it which is annoying but not a big deal. For me the hood is a little ridiculous as I do not plan on using a helmet underneath, but there is a draw string which makes it usable.
Pockets are great especially the big main hand warmer pockets.
All in all I am happy with the purchase, however I would not pay full price for it but if you can grab it $300 or less its a good piece, for $400 you could probably do better. I plan to use it on sub 20* F days. I didn't want a coat I had to wear a bunch of other layers with.