Etymotic research. They'll stay in and the quality is spectacular. Mind you they block off ALL noise, cars, people, birds chirruping, your baby crying, even underground commuting hell noise. They can be a bit intrusive, but once you get used to them, no turning back. Mind you, 90 quid a pair. http://www.etymotic.com/ephp/er6i.aspx You can probably get them on amazon.