Earphones / Headphones: Where to try, what to buy?

But if you don't need your ears while driving, why do you need them while cycling? Especially considering you've got a 360 degree view with no blind spots which is already a massive improvement over a driver's perception. What is it about cycling that demands so much more perception than driving?

you could argue that walking is a lots easier and safer than cycling, thereforth you shouldn't have that much perception than cycling, but you still get people walking without looking straight due to talking on the phone/listening to their iPod/etc.

point being, it's nothing to do with using iPod while riding, moreof to do with the *person* who doesn't adapt him/herself accordingly when using an audio device.