I just got my Librem14! Should I run PureOS or CubesOS?

I am. I have not used this OS before, I even spelled it wrong. I have been familiarizing my self with Linux in the past few years, so it is time I step up the game. I am aware that Qubes is more advanced of a Linux system, and that there is alot to learn. As far as I understood, Qubes itself is a Hypervisor engine, rather than a Linux distro with a Hypervisor installed. Correct me if I am wrong please but you state that the Linux is installed on a Hypervisor. I just want to understand what I am doing before I do it. Thanks for the resources!