I am getting frustrated with my in-ear headphones, which tend to fall out when running. (By in-ear, I mean the ones that look like little buds with a rubber hood on).
I have seen some on Amazon which look OK,
but reviews seem to be variable, and suggest that they still fall out when running. (The majority of reviews are in favour - just don't want to end up with another pair of headphones with the same problem) I wear glasses, which I don't think will be an issue, but may be relevant.
I don't fancy spending a lot of money as they will only be used for running. The ones I am currently using are just fine otherwise.