Search the headphone forums and read the gadget blogs. You'll find many fans of the Shure SE215 earbuds. The praise is deserved - they do sound really good - but they aren't for everyone. The fit can be problematic.
Great sound; Cables detach and are replaceable if they wear out; Lots of tip options in the box
They aren't the most comfortable buds in the bin; Finding the correct seal and fit takes a lot of patience; No remote or microphone, so you'll be de-pocketing your mobile more often