I was hoping to get some advice on a good set of headphones or earphones for both use on a plane, at work and when travelling. I currently have Etymotic HF5s but the one earphone is not working properly and I am trying to get them fixed under warranty. Once I get them back I might give them away and upgrade my set. I was looking for something that works well on a plane and is very comfortable (the HF5s sometimes are uncomfortable on long flights and long listening sessions). That might mean I need noise isloation or cancellation. I am willing to get something over the ear as opposed to the etymotics. Also, if I use an ipod as the source is there anything that can be done to enhance the sound at all? I am looking to spend no more than 250- 300 as long as they are worth it.