The overall quality of sound that is produced by these headphones is great, however unless you can get these positioned completely down in your ear canal you will lose all bass. There are three different size tips to help with the fit, and I will continue to work with the combinations until I find a solid fit.
I purchased these to use with my Samsung Galaxy S2 and I can listen to music but none of the Mic3 buttons work. No control over volume or tracks.
When running it is a huge annoyance that the left earbud (the one with the Mic3 control) pulls itself out of your ear. There must be just enough extra weight with a fit that I have not perfected yet.
Overall I do like these headphones, I just wish some of the features worked in my particular situation. If you aren't getting them for running you will probably be happy with your purchase.