Hi,
http://www.amazon.co.uk/Sony-MDR-ED21LP ... 465&sr=8-2
I used these for a couple of years. Never fell out when running about (as teenagers do).
Only problem was the rubber bit that goes further into your ear eventually deteriorates. I bought some Sennheisers after that, to see what the fuss was about. Decent for in the car, too much bass at home when there's no background noise.
Anyway, those Sonys might be a little uncomfortable at first (30s or so), but stick with them, as I'm yet to hear earphones sound more
balanced - sit at home listening and there's not a huge swamp of bass.
They leave the usual Apple earphones for dead (they always fall out too) in terms of sound.
Bought my Sonys for £20. For £10, you really can't beat them.
Chris[/i]