The BQEYZs are all under $40 in Asia where most of humanity lives. If you think the BL-03 with its bloated bass and muffled highs, the V90 with its deep V and absent mids, etc. are credible competition as balanced, neutral-ish IEMs, well, there really is nothing for me to say further. Good luck to you.kb100 is $50
For sub $40 I'd say there's much more competition than these 3 BQEYZ earphones, especially going back so far as 2018 (tho I get my KB100 at last tomo).
The most obvious being IMO
BLON BL03
****
Multiple KZ
CCA C10
E-MI CI880
Moondrop Crescent
Final Audio e2000
VE Bonus IE
TRN V90
NICEHKC X49... which I think is going to go down as a popular budget favourite AS IT'S AWESOME. For £15 it's got to have one of the most realistic sounding cymbal splashes I've heard. I'm still amazed at the detail it brings out.
Guilty pleasures
ARTISTE DC1
Magaosi BK50
EDIT : There's a ton I've missed, these are just some of my favourites.
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