Summary: I received the Bose QC 15 in the mail today. My previous ordered was canceled by the retailer for some reason. I went back to re-order and the price was marked down to $229 shipped. Probably a Black Friday deal or something.
Summary: Just a quick note about these. My point of comparison for Audio Quality is Senn HD650 / LCD3 / Grado 325is / ATH-M50.
Comfort - Amazing. Gets slightly warm after really long listening sessions, but they mostly rise to that level where you forget you have them on. The cups are like pillows.
Pros: Great noise cancelling with *good* sound, works extremely well out of an ipod
Summary: I found these for a great price used and couldn't pass them up because I am going on a long flight soon. The noise canceling in these is incredible as most have said. Any sound that drones on or rumbles or is generally steady and unpleasant goes away with the flick of a switch.
Conclusion: The best noise-canceling headphones we’ve used thus far are Sony’s more expensive MDR-NC500D ($399) model. Overall, these units have a wider dynamic range, but the QuietComfort 15 unit does a better job blocking out extraneous noise, a critical requirement for keeping your sanity while flying.