I feel bad here because i really like odigg, hes a cool guy and all
but i have to respectfully disagree, though we do obviously prefer different sound sigs. And our listening time was backwards as well, he listened to the es5's 4 times and the 3a only once, while i listened to the es5's once and the 3a's 4 or 5 times.
I feel that westone truly did catch up with JH in the technical aspects of clarity and such with their newest offering. it really is a very nice headphone. From a audio quality i would say that it matches the jh-13. The difference would be in the bass mainly, which is where the 13 has more heft, though if anyone finds the 13's too bassy, i wouldnt hesitate to order the es5.
where we disagree though is on the issue of the 3a. I feel that the 3a outclasses the es5 and the 13 by quite a margin, not in the area of frequency response, though i do like the highs better than the 13's. its a matter of presentation. With the 3a's you get such an increase in soundstage and ability to image, no other headphone ive heard can compare at all. The layering you get with the 3a really is astounding, and the 5's and the 13's cant even come close in this regard. not to derail this thread any further ill jsut link to what i wrote about the 3a, though its quite lengthy.
http://www.head-fi.org/forum/thread/495320/jh-audio-jh-3a/210#post_6695040
but if you're only comparing IEMs that utilize passive crossovers, then the es5 is a welcome addition, and i would have gladly won one of the two that doug entered into the raffle 