Recently i got my hand on a kit of diy mdr e282 shell from china wizard,does you guy have any suggesttion for a cheap earbud with great driver,i see a few option ranging from a25 to a34/44 but i don't know what their equivalent driver is but as it already known that w20/a20 use same driver as e262 but they have gone up in price recently.
Those look really neat, I hadn't seen it before. Good luck with the project, post some photos if you can.