What (Linux based) OS do you recommend?

Black Arch or Kali for sure.

I've got Kali both dual booted with windows on my laptop and bootable via a USB on my keychain. I'm an IT student in the field of web development and not too much for cyber security so i can't give my best shout on it but I've researched into Linux based OS' frequently over the past months. I can't suggest where to look and where to start, but one of the two operating systems that i provided would fancy you nicely.