Here's my quandary: I've yet to find a earphone that I find really satisfying for every genre/recording quality. I'll be impressed by some, but then I remember how a certain album sounded w/ a certain earphone and then I get dissatisfied.
Right now, I'm leaning to the ER4P for classical and maybe keeping the IE7 for jazz (including less quality recordings) and things that need a little more bass (alternative). That would see almost every genre covered for around $300 for what I paid (ER4P used).
Out of those that I've previously owned and if I were not on a a budget, it would be a really tough choice. A fairly uncolored earphone is hard to find, but that is what I prefer for classical. I find though I take a hit in the soundstage as soon as I go to uncolored. I'm not a mid fiend but it is surprisingly difficult to find quality mids that don't overwhelm. That was my problem with the UM3X. I liked the detail and instrument separation, but the bass seemed flobby, the mids in your face and the soundstage too small. I loved the IE8's soundstage but the bass overwhelmed.
Anyways, from the ones I've heard, I'd probably choose the ER4P for classical and UM3X for jazz/rock... That's leaving me short on sound stage though. Maybe the IE7 and ER4P are as good as I can get.
Which two would you pick for which genres and why?