Save yourself $100 and get QY7s (branded under SoundPeats, Flexion, Mpow, Senbowe) if you're just using them for sports and working out. They are incredibly good for $20-$30.
Then you can use that $100 towards some nice wired headphones (or high-end non-sport BT headphones) for your serious music enjoyment.
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The Cheetahs aren't as good as the QY7s (Mpow calls them Swift). You might want to check those out, too. The QY7s are found under several other brands, all essentially the same.
But either way, this is the best way to go if you're just using the headphones for working out. Save your big money for some seriously nice headphones to use when you aren't working out.
I saw these, but didn't like that they don't wrap around your ears. That seems like you're just asking for trouble if you're running (and I plan to use these mountain biking as well, so them falling off would not work). The ones I posted arrive tonight, so I'm kind of excited to test them out!