ZS10 Pro actually pretty good in terms of technical abilities, They can handle complex tracks pretty well for budget price. Bass texture also nice, the sub bass also nice and no bleeds like usual chifi and earlier stage of KZs. If KZX have upgrades, I would suggest for more refine treble section, details but smooth and non piercing non tiring and tonality from low mids until highs. Their BAs still have very steely / weird tonality. I hope they are improving this.