I just had the chance to compare a few iems prior to buying one.
My conclusion, and solely my conclusion based on what i heard and is in no way discounting what other people views are.
1. Shure 846 are bright I couldn't stand them (these are neutral filters though and I didn't bother changing the filter.
2. Layla's are too damn accurate and neutral that it didnt excite me.
3. Roxannes are recessed.
4. fitears mids were recessed.
5. I still love my 1964ears v8's and senn ie800 (balanced) and i mostly like dynamic driver iem's due to my impression that they sound more natural. I dont intend to start anyhing on dynamic vs balanced armature, but this is my preference.
6. I bought jvc fx-1200. After all the comparison.
(I have to thank derek and kin from hk for this)
To original poster -- while i do appreciate the difference in tunings of the iem's i am lured back to the 3 iems mentioned above and i seem to recognize that my taste in music, mainly rock, folk rock, some vocals influence my choice.
From the impressions you shared, i think you may want to check out the ie800's and jvc fx-1200 as these are readily available... It would be best if you're able to listen and compare.
Good luck in your journey. Hopefully you find your iem.
Update: oh my, this is >6mos old. Oh well. Hahaha.