Those spec out very nicely and the pricepoint is quite good for waterproofed down bags, from what I've seen (that option is still quite new in the marketplace). The Pertex shell material is also used in high-end bags.

If you can hit them while they have stock, look at GoLite for deals on well-spec'd down bags. And for comparison sake, look at Western Mountaineering, Feathered Friends or Valendre to give you some idea of the highest end of the market.

Happy shopping.
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--Rick