JVC HARX700
http://www.amazon.com/JVC-HARX700-Precision-Sound-Headphones/dp/B0013OWPV4
or
Superlux HD 681 Semi-Open
You can suggest other headphones if you like but they must be Over the ear and below $50.
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JVC HARX700
http://www.amazon.com/JVC-HARX700-Precision-Sound-Headphones/dp/B0013OWPV4
or
Superlux HD 681 Semi-Open
You can suggest other headphones if you like but they must be Over the ear and below $50.
The Superlux HD Look Alot Better, Also... They're Open
Open=Better Sound, But Leaks More And Less Isolation
Since you didn't list any of your music preferences or what sound your looking for, we can only recommend you one solely by how they look. 
The JVC's have modding potential...im not sure about the superlux. Are you into gaming?