@LaughMoreDaily you deleted your post above? Couldn't find it anywhere save in replies where it's quoted.
Anyway please don't be confused. To be clear as to where I stand, I'll make it categorical:
As between the CCA C10 and the KZ ZS7, I find the C10 better.
As between the C10 and its all-BA sibling the C16, I cannot make the same categorical statement as above; I'm still listening to the C16, putting all my perceptions down on paper. The best I could come up with is that they have different signatures, as I described them in my post.
Your question that I'd "rather listen to the C10 for hours over even the C16", presumes one other categorical statement that I did not utter. Please note my premise as regards both these CCA IEMs was on
value—that's where I started my comparison between them. When talking about value, price is definitely part of the conversation. It should never be omitted insofar as I'm concerned, because to me the price is a feature of a headphone in the same manner that its sound, broken down into its constituent characteristics, is. That's how I always see and
evaluate things. As to how the headphone reproduces and presents the music you play through it, that's where you're right—it comes down to individual preference.
Now...how and why do I say I find the C10 better over the ZS7? The answer requires the requisite bases, and thus will necessitate revisiting the ZS7, which I don't personally own but have access to; so it will have to be explained at a later date.
Until then, don't you think you should listen more to your music and not be so overly concerned about your headphones? If they reproduce the music that you love with sufficient fidelity then you're good. And you EnjoyMoreDaily.