In addition to the fine suggestions so far:
Sony MDR 7506 : tracking, recording, isolating
Audio Technica ATH-M40FS : tracking, recording, isolating
Audio Technica ATH-M50 : tracking, recording, listening at home, isolating (near $100)
Sennheiser HD-448 : listening at home, not so isolating
Koss Porta Pro : on the go, listening at home (casual), you hear outside stuff
Depends on what your use , musical preference, need for comfort... tell us what your ideal headphone would have for features...