I am a little new to high end headphones but I am looking for a new pair of IEMs or full sized headphones. I already have a pair of V-Moda Vibes, which were my first pair besides Apple phones. I listen mainly to hip hop and house so I do like bass but mids and treble are also important. I don't really have a budget but I would Iike a pair that is definently worth the money. The MTP golds have caught my interest as well as the AT M50s. I have also researched the klipsch s4. I usually listen through my iPhone (no amp) or my computer, which has a decent sound card. Again I don't know much about headphones so I am open to any suggestions. Comfort and sound isolation will also be very important since I will be on a long flight next week and I study a lot. Thanks in advance for your input.