If people can't get a good fit on ZS10, I can understand someone disagreeing. But the imaging, soundstage are significantly better, and if you EQ down at 2-4 Khz, you can tell that micro-details are better too. Without EQing, that range sort of hides details, which is why many people prefer the V shape with a hump at ~6 Khz to artificially appear as more detailed. I preferred that too until I had the ZS10, and now the 6 Khz bump in most earphones I have to EQ down or it feels splatty. But going from 3 to 5 drives from the Magaosi K3 Pro to the ZS10, you can really feel that the drivers add lots of space. I think the CH9T is a single driver that is just slightly better than the K3 Pro, but already naturally EQ'ed perfect.
All 4 of these I've mentioned are EQable to be basshead too, and the mids and treble stays clean and unharmed when boosting bass, and it can go deep below 20 Hz where you feel it below what technically counts as the range of human hearing. I'm doubting the AS10 could do this.