Headphones

I purchased new headphones a couple weeks ago, but haven't opened the package yet. To tell the truth, I'm not sure I bought the right kind of headphones for editing audio and video. I got a "deal" at Staples, with $100 off the Audio-Technica Noise-Cancelling Headphones. So, I'm interested now in reading and watching the reviews, to see whether it's worth opening up the package. Here is a very thorough review by HeadphoneReviewHQ: