Which is better ibm aix or rhel when learning?

Question

*nix-like systems

Good afternoon, there is an opportunity to go to courses, both are at the enterprise, what do you think what to choose and why?
studying at the expense of the company, I understand that having understood one, you can understand the other, but the company can pay only one course, so you need to decide accordingly ..

Answer 1

RHEL is more enterprise and more widespread. Take it