Can you post a link to the one you bought? I've seen it on the thread a few times now and I like the look of it more each time.
Related but different question for anyone's opinion...
Does having a 90° or 45° bend in the jack end of the cable make an actual difference in terms of cable survival? Or is it just marketing and a appearance?
Here's a link to the sellers I used for both 6-line braided and the new dark grey ones:
https://www.aliexpress.com/item/New...e-Earphone-Upgrade-Cable-for/32820250786.html
https://www.aliexpress.com/item/KZ-...ne-Upgrade-Cable-for-kz-ED12/32833103008.html
There are many sellers though, including some with better prices and/or more reliable reputations.
You'll find all of them if you search on Aliexpress for "KZ upgrade cable", and then browse through the listings. You'll find all of the upgrade cables KZ has offered, including the ZS3 and ZST style (and I even found some listings for MMCX upgrade cables using that same search term, but I was not aware that KZ makes any MMCX cables so it could be an error in the way the seller has the title listed).
Anyways, just be aware of the cables you buy and which ends they have. The 2 main styles are "straight" and "angled". The straight is designed for ZS3, ZS5, and ZS6. The angled is designed for ZST, ES3, ZSR, and ED12. Some of the cables can be trimmed/modified to fit the opposite models (specifically the 6-wire braided cable can be trimmed to fit the ZS3, ZS5, and ZS6). Lots of us have done that with zero issues, but you'd have to decide if you want to take the risk of messing something up.
And as far as the angled vs straight at the 3.5mm plug, I've personally had better luck with angled vs straight 3.5mm plugs. But that's generically speaking, not specific to the KZ cables.
However, when I stack my amp and DAP, there's no room for a 90 degree cable without doing weird stuff with the way I stack them together. So for that configuration I prefer straight cables. But when using just my DAP (no amp), a laptop, phone, etc I much prefer angled cables and I do think they last longer because they seem to put less stress on the cable. In cars when using AUX cables, I prefer straight though. It just depends on the specific situation and space setup.
Hope that helps.