Hi, I travel a lot and have been through many earphones and headphones. I need comfort and isolation from the ambient noise plus decent performance. I have a pair of Shure 215, which isolate well but I cannot get used to the unusual fitting position. I have Sennheiser PX 350, with active noise cancelling that is really no better than well fitting earbuds. I would prefer headphones as they are more comfortable for me over a long journey, but I need to find a pair that isolate me from the outside, plus do not leak sound to annoy fellow passengers. Am I after the impossible? I have considered Bose Quietcomforts, but is that my only option?