My partner has a small head so she doesn't like head band headphones which mess up her hair and fall off! Her ears are also too small/the wrong shape to wear ear buds.
I bought her a set of Sennheiser PMX40 to go with her 40GB iPod. She liked them but they got trashed in her laptop bag after about a year
http://www.sennheiser.co.uk/uk/icm.nsf/root/500145
She replaced them with some cheap over the ear Panasonics which sound dreadful (to me).
Can anyone recommend a set of behind the head or over the ear 'phones with good sound quality that can also stand up to a decent amount of wear and tear everyday? Budget is up to £50 for something great.