Thieaudio Monarch MKII

If budget is an issue then the answer changes, here's a year-old list https://crinacle.com/rankings/iems/

I also submit Truthear Zero for $50ish, Celest Gumiho for the samish price if you don't have big earholes, and Letshuoer S12 Pro if you want something really good. There's Salnotes Zero in the $20 range and it's got a really good reputation but personally I don't think it can do treble.

None of these are literally earbuds, they're IEMs to split hairs