When I got this headset for a couple of years ago I was incredibly pleased. Very nice sound and great bass. Also, they are really closed when you barely hear any other sounds around them, can be partially replaced as earplugs ;) Perfect on air where it can be a lot of noise, or if you are out cycling and running. You only hear the music, or audio book for that matter, nothing else.
A minus get it because it does not work well as hands-free, at least not to my E52. All the features will not work when talking and moreover seems microphone be really bad. But I reserve that it may not be fully compatible with my phone. For after the latest upgrade to my E52 does not work even the volume buttons to the headset anymore. But I might have a broken copy too.
An additional minus get it to one cochlea stopped working now. That "tangle-free" cable also has disadvantages. Firstly, it is not always tangle-free and cord material has the ability to stick in everything which makes it perhaps unconsciously Pulling the cord too tightly. Suspect that this is what happened when one of my shell stopped working.
But despite this, I plan to buy a new one, because it's still affordable for music's sake.