Now that I have tested few tips on Z5000 maybe I can share my own experience:
- If u want good isolation, maybe this iem is not for you. The vent at the back of the housing makes it sound like open back iem although maybe not much. But if you close the vent, you lose the bass impact. So a bit tricky. My solution, I close the vent on the left with small sticker and leave vent on the right open. That way I still get the bass plus average isolation, which to me still justifies for everyday commuting coz the SQ is soooo good. And it tame the driver flex too. Thanks to poster who suggested this solution.
- Next, you need to get good seal to get the best out of this iem. I use KZ starline tip, after experimenting with so many tips. Initially I use Sony tips. But KZ can stay better and longer in my ear. In general any tip that can stay in you ear should be ok.
- Sound signature, I'm not very sure how to describe it. If I were to take a guess, I would say balance sound. Sometimes it can bring to the front certain sound that you could only hear at background using other iem... <<--- haha I should leave sound imporession to the expert