Best type of headphones while riding I'm starting to commute on my bike soon and was looking for suggestions or advice on what type of headphones I should use to listen to music while riding?

I am aware of the dangers of listening to music while riding and intend to only ever have one earpiece in at a time (so thinking in ear / over ear headphones).

I'd imagine that headphones that just "fit" into the ear (Example) would fall straight out. Those that go deeper into the ear (Example) wouldn't fall out but would also reduce outer sound (bad?).

So with this in mind I believe the best choice for cycling would be those that go over the ear (Example)

Am I right in thinking this? Is there anything else I should be considering when choosing a pair?

Many thanks.

N.B. All links are from Play.Com (UK) and are just the first examples of each I found.
I'm not sure there's a best type for cycling, but the latter two examples have their pros and cons and I think you pretty much nailed them.

The last type you posted is going to give you a good snug fit but without the noise isolation of the in ear type (2nd example) which isn't great for listening to music given the wind noise, but for safety reasons is preferable. So if you're riding on public roads and safety is your primary concern, go with the earbud style with the around the ear clip (last example). If you're more concerned about blocking out wind noise and listening to your music the in ear (second example) is the way to go.