Originally Posted by Supra
basically, the quality on the burton insulator is lower than similar priced mountaineering company ones (as mentioned already patagonia etc). The Burton has two things in it's favour though:
1) it's Burton, so mass produced and it's easier to find last season's stock on sale
2) it has pit zips where the others don't
This, which I personally find mandatory. I had last years AK Insulator, which I would only use when it was -10c or more. Still I find it was a bit over kill and bulky. I bought this years Ak helium insulator which is a lot more low profile, and still very warm. I havent hit -10 yet, but im confident with a marino base, the lower profile AK insulator and 3L goretex shell it will be just what I need.
In either case I find the pit zips a must. If you over heat in one of those things you are toast....literally.