Which tech hiring company/solution has given you the best results?

[rhsapps]

With so many different players in the tech recruiting space (Triplebyte, Interviewing.io, etc) trying to solve the same problem with slightly modifications in their approach, I wonder which solution has worked best for your company/startup. Why did you decide to give them a shot ? Did you first run a pilot ? Do you use multiple solutions/partners at the same time ? At the end of the day you just care about talent, it doesn't matter where it comes from.