What earphones to buy for Clip+

I like Sennheiser earphones. You need to decide if you want isolating canalphones, such as the Sennheiser CX series, or open air ones such as the MX series. Some people get both isolating and non isolating ones. The isolating ones are good on planes and trains, but might be dangerous to use when you are walking through traffic and at other times when you need to hear what is going on around you.