well guys, this is my first time reviewing an iem so hopefully I can manage to get the point across.
plainly put, i love these items. the ZS10 Pro's have an incredible amount of good bass and subbass, and as a bass-head when I say good i mean it. it's very well defined, weighty, and hits hard. i use these all the time to listen to EDM and Future funk. the only con I'd give these iems is that they're not really all that treble focused and on some tracks you can lose out on some of the smaller details in the music. this isn't a sterile monitor iem, but it is a fun sounding iem, this is something I'd reccomend using for a bus or train ride, walking down the street, and even jogging or going to the gym (where i use them most).
my conclusion: if you're looking for a fun iem with amazing bass response for the price, look no further!