Best place to explore this is over at head-fi.org, where they talk headphones incessantly, and are quite nice, too. I have learned a lot from there, and also used the site to make an informed purchase of my fave, the Audio Technica L3000.
For example, you'll find many comparisons of IEMs, but the UE-10 is clearly in the top of the heap, with the Sensaphonics 2Xs...those seem to be blow away the universal IEMs, from what I've read. I have the Shure e4 and e5 and have had the e2 and e3. The e4s/e5s are different and very good, but from what I've read, should not compare to the UE-10...and they are very different prices, too, with the UE-10 being almost 3x more than the shure e5.
- walkman
For example, you'll find many comparisons of IEMs, but the UE-10 is clearly in the top of the heap, with the Sensaphonics 2Xs...those seem to be blow away the universal IEMs, from what I've read. I have the Shure e4 and e5 and have had the e2 and e3. The e4s/e5s are different and very good, but from what I've read, should not compare to the UE-10...and they are very different prices, too, with the UE-10 being almost 3x more than the shure e5.
- walkman