If you're looking for something closer to $100, I suggest these:
Beyerdynamic DT231 (~$60). Tight and impactful bass, good highs, slightly recessed mids. It has a v-shaped sound that is pretty enjoyable.
Sennheiser HD485 (~$75). Somewhat dark sounding. Bass is slightly strong, but it is not boomy. Good mids. Highs slightly rolled back but responds well to equalizing. Great headphones for rock, rap, dance...basically anything that calls for good bass.
Alessandro MS1 (~$99). Well, maybe this is not a consideration because you said to exclude Grados, but the MS1 has a really nice sound. Good balance, impactful bass, does not suffer from the screechy highs of other Grados. The negative is that it does not have any soundstage.
Sennheiser EH350 (~$65). A very balanced headphone with nice, tight bass, clear highs, and decent mids, but it is a bit dry-sounding. It's hard for me to articulate exactly what a "dry" sound sounds like, but I know it when I hear it. I'm not particularly fond of dry-sounding headphones, but the EH350 does not suffer to the same degree as the HD497. By the way, some people seem to think that the EH350 is just a slightly-improved version of the HD497, but I think it's much better.
AKG K240S (~$80-$99). Very smooth sound but with slightly boomy bass, hence the "groovalizer" moniker. Too me, these come across as a poor man's HD580. Some people say that the K240S needs to be amped, but I actually find the amped sound to be slightly too aggressive while the unamped sound is smoother and more balanced.
Etymotic er-6i (~$85). I love the sound of the er6i, but I can't stand the discomfort. I find these to be the most uncomfortable iems I've tried, which is a shame since I think they sound great, but that might just be me.