Best DNA sex testing companies? Experiences?

[-Bella Cataline-]

I need to test my two week old chicks, all different breeds. But there are a bunch of companies that are providing this and I wanted to ask you all before I decided.
I'd love your opinions and experience on different sites!

 

[Pyxis]

iQ Bird Testing is my go-to. I use them for my emus every year and so far they have been right every single time.