In reply to czajunia:
I've bought a mid-weight down jacket and two sleeping bags in KTM. Like most of the non-genuine stuff there, they're fine for non-extreme use and much cheaper, so therefore decent value.
I doubt you'll get 850 down in anything. My guess is the best is around 700 and I wouldn't trust any external logo or wording as to the down quality, just as I would ignore the fake name - it's meaningless.
Just look at the bag - the *individual bag*, as QC is poor an all items are slightly different - and decide on THAT bag, whether it's suitable or not. You'll have to go to three or four shops to compare, if not more.