Just thought I would offer up an FYI...
Costco has Philips Deluxe Noise Cancelling Headphones on sale right now, regular price is $79.99 - $20.00 instant rebate.
I just picked some up and they seem every bit as good as my Bose QC2 headphones (stolen last October).
Construction and Audio Quality seem very solid. Noise cancelling seems like it is close to what the Bose offered. So far I am impressed with these headphones at a fraction of the price for the Bose. I have a flight next week so that will be the real test on how well they cancel out the airplane drone.
Anyway, just thought I would pass the word on.