I'm not great at reviewing headphones of any kind because I don't have that many to compare between, but I can tell you that these are better than any stock earbuds that come with any phone, mp3 player etc. They aren't great with bass, but you can't ask for a lot, since they are earbuds. Surprisingly though, They offer great noise isolation at 50-60% volume. The instruments can get a bit crowded at times and at high volumes, the sound becomes a little scratchy, but it plays most genres and tracks wonderfully.
They are wonderful value for their price, and are my personal recommendation when it comes to budget earbuds.