I spent a lot of time looking around and in the end just decided on these. The price range is riddled with various ones doing different things.
The features of this one that were attractive were being able to fold up and good quality. The sound was fine, after 3 months of minimal use they have broken, the folding mechanism, which doesnt allow the thing to become that small anyway, means that its very weak and so one of the earphones has become detached from the top and other earphone.
The sound is not incredible, not bad but nothing special and after this I really do think inner-ear phones are much better, they actually cancel out noise, are comfortable, good sound straight into your ear and also no sweaty and painful ears - something you get from these.
Theyre not awful but not the solution!