As far as cheap headphones go, these are suddenly really popular... for good reason. http://www.wired.com/2015/06/mrice-e300/
If you are looking for a clear upgrade to the stock headphones that come with your phone, and don't want to spend a lot of money, look no further. They are bright and fun, rather than perfectly accurate but they sound fantastic. I wanted to say "for the price," but actually, out of the box, they are pretty good. I had a little trouble getting them perfectly seated and, like all in ear monitors (IEMs) http://amzn.to/1Gk8dRd
Once I got them seated, my first impressions were they were very detailed and open sounding, with bright highs. After a few minutes, those bright highs became fatiguing as they were just a little too "fun" for my tastes and got old fairly quickly. The stock ear adapters were not the best either, I could not get a good seal and got terrible bass response out of them to start with.
As with many of my IEMs (I own 6 or 7 sets right now, from Westone and Shure multi drivers down to other cheap ones I use at the gym) I found that replacing the rubber seals with foam ones works better to give more isolation and to make them more comfortable. Plus it makes getting that correct seal much easier. My extra pack of Comply TX-400 fit these just fine and improved the seal and ease of insertation measureably. Plus, you get much better isolation if that is what you want.
The downside of foam adapters is that they are not nearly as sweat resistant and will fall apart if you go to the gym with them in, so the poly or vinyl triple seals are usually quite a bit more durable, although for me, less comfortable.
Once I got the Comply ear adapters in (doubling the cost of the headphones) now, I get it. They sound really good. You can turn the volume down a bit so they become less bright and in your face with the highs and the bass is nice and punchy with decent extension. It shows how critical the seal is to making headphones sound good. Lots of details and a bright airy sound make these earbuds compare favorably to some of my others.
There is a decent amount of cord noise, so these are probably not the best for taking to the gym anyway. I also notice they don't have the isolation of some of my other headphones, even with the foam ear adaptors. They are completely no frills - no microphone or answer buttons so smart phone users may want to look elsewhere as well. They do have nice strain relief near where the wires come in and they seem to be built reasonably well.
I still think my triple drive Westones sound better all around and my Shure's have much more detailed highs without the fatigue these can have at high volumes, but for the price (literally 1/15th of the cost of my Westones,) they are very impressive sounding for the price. Good luck and let me know what you think!