Just got an iPhone 7, should I use my old earbuds with the dongle/lightning connector or use the ones that came in the box?

I'm not sure which I should use first. Use the lightning connector with the earbuds I've been using or should I use the earbuds that come with it that just plug into that charging hole? Sorry I'm not so good at deciding.

I'd say the headphones it comes with first so if you lose those you can use the dongle

They cost $15 for Apple brand replacements, so I don't think it really matters. I'd use the new ones since it's more convenient.