I have not been a fan of IEMs, especially over the ear types, and in the past have only bought good budget pairs. In that group, I prefer drop downs because I get exasperated with fidgety fits and finding "perfect" tips for over ears. Drop downs also work much better with my reading glasses. In the headphone group, I prefer almost all my headphones over any IEM I had tried. Headphones are comfortable, great bang for the buck, and come in many different sound profiles to fit your mood. However, I read the reviews and discussions for these and decided to try an upscale IEM.
No question, the EE Zeus is the best sounding IEM I have tried. I second the reviews that praise their space, detail, sound stage, isolation, and strength in every part of the sound spectrum. They seem well-made, the cables are excellent, and they fit well (after some fidgeting, of course). But …. are they really that much better than IEMs costing much less? In my opinion, no. The cost is so high, compared to less expensive but quality IEMs, that it's hard to justify a purchase. The quality differences are not that significant unless you are an audio purist and price has no meaning. As for a comparison with headphones, they are even harder to justify. I prefer almost all my headphones, no matter the sound profile, over the EE, without regard to cost.
Would I buy these again? Probably not. Do I want to return them? Definitely not. I went into the purchase with eyes and ears open and now have a pair of very fine IEMs.