Both I and my missus use the original ones and if I'm honest when she first got them I wasn't too keen on them as I thought they would be the same sort of fit for me as the ones that come in with your phone, Wrong, they seemed to be a perfect fit me and never had a problem with them coming out.
Since then I picked up a pair for myself but should have picked a pair of these up instead.
These will be a 100% purchase for me in the near future