Sports headphones recommendation

[PikeyPriest]

I need to get some headphones for the gym and was wondering what was recommended. I was looking at Sennheiser OMX-70's which ive seen for £20-25, but is there anything better that i should pay extra for? As they are for gym use, the high end stuff that wouldn't like getting sweat on them aren't really an option.

Thanks for any help