I use these for my home office. While they're not noise cancelling for the ears, I do find that they keep a lot of external noise out (I have two kids and I hardly hear them, if at all). The noise cancelling mic is perfect for my home office setup due to kids being home as well.
I find that they're a little snug on my ears (mind you, I have big ears...), but it's not to an extent that makes them noticeably uncomfortable to the extent where you really feel the need to take them off.
Audio quality is crisp and bass is good. I'm really happy with these.