Westone 3?
- Simply excellent overall sound, with oomph in the bass for when you listen to trance (I mainly listen to soft>hard rock, trance, electro, house, etc.)
- 0 microphonics when I wear them over the ear
- Fit EXCELLENTLY and extraordinarily comfortable (I have medium sized ears, ie using medium sized olive tips)
- Cord is very durable and the nozzle (or whatever the technical term is) is not too long so you won't have to worry about it breaking
- Comes with a case w/ handy clip, ear wax tool + brush, 4 pairs of foam tips, 1 pair of tri flange tips, 3 pairs white silicon tips, 3 pairs of olive tips, plus a guitar amp style jack and an inline attenuator.
Sennheiser IE8
- Big booming bass that can be adjusted with the knob on the housing
- Great sound, but I would rate the W3s above them in terms of clarity and quality of the higher frequencies
- Can be worn down or up (i wear them down as this is most comfortable)
- Removable cord
- Extremely durable (bashed them around and washing machine-d them a few times, still work after two years)
- Haven't had any issues with microphonics
- Comes with a bunch of tips, and a carry case (but the case isnt as practical as I would like), however you may have trouble getting a good fit. I had to mod a pair of large Shure foam tips for them to fit well, but after that the isolation, fit and comfort were excellent. Check out some of the threads on here for suggestions.
Both of these should be around your price range! Hope this helps a little bit.
EDIT: Oh and I use an iPhone 3GS as my PMP most of the time
