I'm looking for some good headphones that are $300-$500, over-ear (Preferably open-back as well), and portable. Each time I think I've found the perfect pair of headphones, there's a con such as "Best with an amp" or "Too uncomfortable." I would like for it to also be noise canceling, good sound quality, and comfortable. It doesn't matter whether it's wireless or not. This isn't for studio use, but it's for portable use with my iPhone. Anything that fits these would be very appreciated! Thank you!