If you define “best” as “most popular” then you can’t go wrong with Black Diamond C4’s. It is a good, safe choice, especially for your first rack.
If you turn up with a set of cams from some obscure brand, that no one outside of Kazakhstan has heard of, then you might find some people reluctant to climb with you. It may not be an entirely rational response but some climbers are brand-oriented.
That said, the smaller Black Diamond C3’s aren’t the best available for the size. Alien’s and Wild Country are better options here.