I trust the innerfidelity wall-of-fame for headphone recommendations. If you're looking for closed-back, over-ear cans, here's your list:
In your price range:
Sennheiser HD 202 ($34)
Budget conscious? Wondering if $20 can get you a worthwhile headphone? The good news is that the Sennheiser HD 202 is not a cheap plastic toy...but rather an inexpensive but well-built plastic tool. It's stylish, fairly comfortable, and, well, ridiculously inexpensive. It's also got a very long cable, which is good if you're using the headphone in a working environment...but not so good if you're using on-the-go—though the included cable take-up winding gizmo makes it a little more tenable.
Sound quality is warm and somewhat disjointed with strong bass, slightly forward mids, and a relaxed but reasonably articulate treble. Though far from perfect, the HD 202's laid-back sound is easily accommodated and never strident or obnoxious. A much better sounding headphone can be had for a bit more than twice the price in the Creative Aurvana Live—well worth it if you're looking for sound quality. But if you're in a working environment, the longer cable and beefier build quality of the HD 202 might be better in the long run.
Monoprice 8323 ($21.59)
I can't imagine how anyone can produce a full-size headphone for $21, much less how they could do so and make one that sounds good as well. But by golly they sure did! If you're looking for a cheap beater headphone that will see duty in a backpack, playroom, or be bashed around in the back of the mini-van, these are your go-to choice.
The one downfall of these headphones is a somewhat uncomfortable fit due to poor padding on the headband. The cable is very long at 10', and is removable from the left earpiece and is terminated at both ends with identical straight 1/8" mini-plugs.