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Diatone has a new Mamba 40A ESC which runs BLHeli_S if you don't need all the BLH32 features. I like the solder pads instead of the factory soldered wires, only 10mm wide, protective cover, and a very good price.
https://www.racedayquads.com/products/diatone-mamba-esc-40a-3-4s?variant=8202576134251