The non-mic version of these headphones are on sale for $13. I have the version with the mic, and they're the best damn earphones I've ever used. Their sound:price ratio is unbeatable. The bass is deep, the highs are crystal clear. I cannot recommend these headphones enough.

Yeah, that's been a problem for me too. Because it's uncomfortable to lie on your side with the earbud poking your ear. In that case, I highly recommend these: https://www.amazon.com/MEE-audio-Sport-Fi-Isolating-Headphones/dp/B0038W0K2U/ref=sr_1_3?ie=UTF8&qid=1475263800&sr=8-3&keywords=meelectronics+m6

They are slimmer than the profile of your ear, so when you lie on your side you don't feel it pressing in (at least not nearly as bad). They're not bluetooth but they're something