Greetings,
Sennheiser definitely offers some of the best quality headphones on the market for uplifting trance. I recommend the sennheiser hd 280's or 380's. Both are within your price range, and offer studio quality. However, the 380 pro's have a lower impedance, which means an ipod could handle them easier than the 280 pro's. They are both closed back, which offers a more compressed sound than an open back, and are highly regarded among studio engineers and average consumers.
*Keep in mind, these are over ear.
be careful you don't go with anything above a 70-80 ohm impedance, or you will need a portable amp to run the phones (Entirely new topic).
If you would like to gain a superior knowledge of headphones, here is a link explaining the entire science:
http://www.head-fi.org/t/607282/headphone-amp-impedance-questions-find-the-answers-here
(I recommend you get comfortable before reading this document, maybe even take notes, you will definitely learn something)