Agree with Gb24's recommendation of the Sennheiser, you won't find anything more comfortable and the next step up in the line, the PX200, is still within your budget.
If you're going to be flying and are interested in active noise cancellation the PXC250 works very well at the price and has the same design as the 100 and 200, with the addition of a battery case inline in the cord. None of the three provide maximum isolation on their own so the noise cancellation is a nice addition.
If you're going to be flying and are interested in active noise cancellation the PXC250 works very well at the price and has the same design as the 100 and 200, with the addition of a battery case inline in the cord. None of the three provide maximum isolation on their own so the noise cancellation is a nice addition.