They've been around since 1991, but the Sony MDR-7506s are still great sounding -- and fitting -- headphones for less than $100.
Sony's MDR-7506 closed-back, full-size headphones click with all music genres and are comfortable to wear for hours at a time; They sound excellent for their relatively modest price point.
With a coiled; pro-style cable and lack of an inline remote/microphone; some will find the 7506s less mobile-friendly than more modern headphones.