Here's a link giving a stellar review of the Sure E2C (I've not heard them, but by subjective reputation they are good sounding with highs that are a little subdued). This review also includes favorable impressions of the Sony EX71s, which I do have, and which have prominent bass and highs (which by your account you might not like) but which I feel are well into the realm of high fidelity. The EX71s are supposed to be the most comfortable earbuds. You just have to realize they have a very aggressive sound. They are $40 or $50 or less. The reviewer is a very well-respected audio engineer (Linkwitz).
Anyway, here's the link:
http://www.linkwitzlab.com/reference_earphones.htm
As far as portable closed full-sized hifi headphones other than earbuds under $100, that's a tall tall order, I think V6s are about it, at least as far as I know. Again, though, you're going to get an aggressive sound with those, with lots of highs and low bass. As WmAx pointed out, some feel they are near the pinnacle of accuracy in headphones, but this does not equate to the best phone for pleasure listening, but it IS portable and it IS hifi.
Sony Eggo D66s are closed and portable and can be imported from Japan for about $100 (audiocubes.com or minidisco.com). They have a nice smooth sound, but come up short in the mid-bass, which can really detract from the punch in the music.
I've not heard the Audio Technica ATH-D40. If you get it and like it please post about it, I'd be very interested to learn about it.
I can vouch for the AT A500s based on a brief audition, but it is in no way portable. It may well be the most pleasurable (by average hifi taste) closed phone in your price range though. The Senn HD280 is quite good sound quality, but again not really portable, not that comfortable, and more toward the monitoring type sound but to some more pleasurable than the V6 anyway, it's not so bright and strident.
nm2285 said:
Thanks for the responses.
Steve:
I definately want a sealed design. I'll be using my main system whenever making noise is not a problem. For the closed designs, I'm most heavily considering the Sony V6s (found around $100), Sennheiser HD280 (found right around $100), and Audio Technica ATH-D40 (found at $60). Those prices include shipping.
I'll be using these for pleasure listening, not studio monitoring stuff. I enjoy a wide range of sound. I would say I lean more towards the warm end of the spectrum, but not if it means a lack of detail. I don't mind a dry midrange, I just shy away from overly bright sounds.
Portability is a considerable issue, which is why I'm leaning towards the in-ear style (I want to be able to take them with me to classes and stuff). Any opinions on the Shure E2? Right now, that seems to be where my money is going.
I have not yet ruled out the full-sized phones though! Please offer any advice on them!