If you want a real side-grade that's worth it, I'd go for the Westone ES5. That's a significant sound signature change from the JH16. It will highlight mids very well in pop music.
But, as others have stated, don't expect a significant performance change at this range of CIEMs. What you will really get is a sound signature change.
I have seen some review said that ES5 have a beautiful mid but lack of a bit bass. But I can not find any website that take order of ES5.