I have owned these for about a week. I also own a pair of Shure in ears I think the model of those were the 340s. After listening to the Klipschs I put the Shures in my dresser drawer. The M40s are clear, detailed headphones. I enjoy listening with noise canceling engaged. I listen to a iPod touch 4th gen. With these and it sounds excellent. I have also hooked up to my Denon A100 and with power driving these phones it brings everything to the next level. The Bass, mids and highs sound like you are there listening live to the source. They are very comfortable to wear for hours on end. Very nice looking and light headphones. They are iPod/iPad compatible cord has built in volume/ pause function. In fact my wife has a iPod touch also and she hijacked my M40s. The good news my M40s showed up yesterday via UPS. If you want a detailed sounding set of phones that are easy to wear and look at take a listen to the Klipsch M40 Noise Cancelling headphones.