It doesn't have a microphone, unfortunately, but the best earbuds I've found are Skullcandy Titans. I found them while doing a search for best earbuds under $50, and one review had them described as 'not only the best earbuds under $50, but they're the best earbuds for under $100.
They've been very durable and the sound quality is excellent.
That said, Skullcandy has an offering called Smokin' Buds Mic'd, which is a slightly cheaper selection than the Titan, but they do have a microphone. Based on the other Skullcandy buds I've used, then I feel confident in recommending these if you need a mic in your earbud.
I will never use an Apple earbud again. They're brutally bad compared to Skullcandy. They hurt my ears and sound like a tin can on a string by comparison.