Kz AliExpress control quality is terrible… shopping advice (?)

Literally I’ve bought like 4 kz edx pro / pro x and literally all of em has different sound balance. Specifically that the left module is quieter as hell and sounds terrible, while the right module is perfect with good audio and volume.

Recently got into a need of buying a new iems and I don’t know which ones to buy, all I can do is 10$. What can I get?