I joined just to add something about the ADDIEMs.
While I agree that they aren't really worth their price tag, I think they achieve a nice balance of sound quality, and can shine if the listener manages to get a good fit. Or actually, fit is very important with these. I found that a poor fit initially gave me unimpressive results, but when I finally got a good seal, these started to shine. Bass was controlled, with the right amount of punch, mid was bright rather than muddy, and high was crystal clear, but not too sibilant. But that didn't happen until 6 months after I bought the second pair. The first one had really bad mid distortion at higher volume. The second pair faired slightly better, but still not able to reach full volume on either my iPhone or my MacBook without distortion.
I think these are a good fit for slow, and calm pop rock/r&b/jazz. But not really good enough for techno/heavy metal, and as suggested, there are better alternatives. Also the fit is really hard to get right. Without a good fit, I think they sound even worse than the stock earbuds that came with the iPhone.