Hey all, created an account just to thank everyone for sharing their insight. I went ahead and pulled the trigger on the EB90EX's. Ordered through amazon to the states. I'll report back when the burn-in is complete and I can give my initial impressions. For now, thank you all again!
My original post from some weeks ago is quoted above, I received my EB90EX's after some very excitable waiting out of me and some patience out of my wife. I wanted to share my experience with these so far.
I have to admit, when I first received them I tossed them right into some music I thought would take excellent advantage of the bass. They sounded very disappointing.
My initial feeling was that I was lead astray by you guys! I put them on a burn in cycle over night though and let them play/rest/play on my work computer throughout the day. I decided I would only listen to them with mild music for a while and come back to the bass later. After about thirty or so hours of playtime I played some heavy electronic music I normally listen to (Deep Trap, if you're curious) and my god... my jaw actually dropped.
Whatever apprehensions I had about whether burn-in (or whatever it's proper term may be) is an actual process the drivers go through are now completely destroyed. I have read that these headphones can make you literally
feel the bass in other parts of your body! That sounded a bit fluffed to me but again I was wrong. It's a very weird feeling but the bass is so magnificently strong it somehow broadens itself over your entire body. I can feel it in my chest cavity somehow and my wife says she can feel it in her feet. (She is most decidedly NOT an audiophile, so this actually validated this supposed phenomena for me more than anything).
I have not been lead astray, I now owe a beer to anyone who has recommended these in the past. They are most definitely above and beyond my expectations, which to be honest I had almost expected was unattainably high. Sony has broken that boundary in my mind as well.
The highs
are rolled-off a bit but to be honest they are still definitely IEMs. They are noticeably different on the highs compared to my Shure SE215's but it isn't necessarily a negative difference. Let's put it this way: if you want this much bass, then you will be delighted with how clear the highs are when considering you get all the succulent bass around it.
Bottom line: I would be willing to pay over $300 if I knew something was going to sound this good. (I see people wearing that much money in Beats by Dre on a regular basis, they don't get this kind of sound) I see the value of IEMs all the way across the price spectrum and I think these have easily out-classed themselves.
10/10 Would buy again.
Thank you all for your excellent insight.