I've been super pleased with this bag. I have last year's model, but they seem to be the same. This bag is my first down bag after using a variety of synthetic bags from 0-30 degrees. The bag is fairly light. Heavier than an 800 fill bag, but a lot cheaper and still pretty easy on the back. And it's still is lighter and packs smaller than a comparable synthetic bag. Where I've been most impressed, however, is how warm it's kept me even when the temperature drops. I've slept in this on snow at below 30 more than once and been quite toasty wearing winter base layers and the Stoic Hadron. I've been as comfortable as friends in 0 degree bags. I thought this bag was pretty neat from the first, but after a year of pushing the limits on how cold I'll take it I'm even more impressed.
My only complaints:
Pretty roomy around the torso (could be a pro I suppose, but I think it'd be warmer with a little less dead space)
Foot zipper and pocket seem pretty worthless to me. I'd take them out to save a little weight.
I wish I'd gone with the 800 fill, but that's not really a downside of this bag. At the time I was on a budget and this fit the bill. Now I'd appreciate the lighter weight.
Overall, highly recommend.