Well, I had them for a while (until they broke), and really enjoyed them. They do not extend very high, but the bass is very good (if anything, the bass quantity is light, but it's tight and fast). The mids are really nice, actually I preferred them over my SF5pro. Isolation is good, and comfort, for me anyway, was very good too. But as ClieOS said, there are many alternatives at this price point. For example, a couple of days ago, I bought the Radiopaq Jazz for about 20$ and I'm pretty sure that many people would prefer them over the SF3. They have much better extension (both end), but they have a little recessed mids for my liking (coming from mid-froward SM3 anyway).