I tried the Sennheiser earbud type headphones (MX 400, i think, £20 from Maplin), took them back and got my money back. The sound wasnt that great, and the wire was too thick and stiff, not as flexible as the iPod ones. Whenever I moved my head, they would want to stay where they were and the buds would move around in my ear or fall out. Saying that though, most in ear headphones tend to fall out of my left ear for some reason. I've gone back to my iPod headphones now, even though one of the buds crackles at high volume (loose wire?).