I've had this jacket a little over a year, and as everyone has said, this thing is awesome. My original intent was to use it as a warm layer for ski touring. I wanted something warm, but also something that would breath a bit. This jacket was both warm and breathable thanks to the insulation and fleece panel combo. I've worn the Atom SV, and loved it, but it was too warm for my active, high body temp, exercise. One of my favorite aspects of the jacket is the sleeve cuffs. They are super thin, and stretchy, which means this jacket layers really well in the winter without adding too much material at your wrists. The hood will fit over a ski helmet too, which is a bonus. After two winters of ski touring, it's still in pristine shape. Not a surprise for Arc'Teryx. You get what you pay for. Only complaints are that the zipper doesn't like to stay all the way up, but this might be different in newer models (I hope). Only other complaint is that I don't have a couple of these because I've worn this jacket in so many situations I wish I had a couple.
I love this jacket and I use it for a wide range of activities. The fit is perfect (snug, athletic cut - I'm 5'10" 180 and wear a medium). I can't fit much underneath, but then again, I don't really need to. This jacket is good over a t-shirt down into the high 30's, and with a more substantial baselayer into the 20's. I love the elastic fabric around the wrists which seals the heat. My only complaint are that the panels under the armpits allow wind to enter, but just throw it under a shell and your set. Definitely my go-to layering ski jacket and around-town fall/spring jacket.
Great Fit, Warm and Packable!
I'm 6 foot, 190 Lbs, 35 inch arm length, and I struggle to find jackets that fit me right in the arms without being too big in the body. The athletic fit of this jacket is perfect for me. I got a Large and it fits me just right. The jacket is very thin and packable yet surprisingly warm for how lightweight it is. The jacket is stylish and great to wear on its own when its not too cold or as a mid layer when the temperature drops below freezing. I love the looks and quality of this brand - definitely worth the money.