Superlux HD668B
Or the Fischer Audio FA-004.
Or Grado SR60i.
-Superlux: They say it has good clarity and quite good bass. Very cheap. Lower than your budget actually. Was about to buy one but as it will be my first headphone, I opted for the more established headphone(read further).
-Fischer Audio FA-004: Gets good reviews. Some say less realistic treble, boomy bass and so on. Others say good bass with a tad bit of boom, nice sound stage for a closed headphone, comfortable. It is rather smallish though. I was about to buy this as well, but then further inquiries led me to doubt it. Fischer Audio reviews all over the net tend to be a bit biased sometimes, so not willing to take the risk, I didn't buy it.
-Grado SR60i: In the end I bought these. Not very comfortable but after stretching the headband a little, it was more tolerable(for about 2 hours). Sound leaks from and into it, you'd look like a WW2 bomber pilot, needs a higher volume on my source to get decent volume. However, energetic sound signature with good quality bass(decent amount), good clarity, a bit sibilant, might not be the best for female vocals but quite decent for casual listening. The most expensive of the three.
seems like none of em is really ideal..