I agree with all, I try all panels, the payed license of Plesk too (but in monthly license are not included the payed security plugins), but in aaPanel Jose like only Nginx 😃 No firewall for Apache or for the brutal OLS, Mod_security can´t find, Nginx use as proxy for Apache or OLS... etc.
In the panel is all for Nginx, other users are forgotten... :/
A little minus, users are not limited, 1 user with WP can kill 8 core server.
Best webpanels for free are aaPanel (for starting guys) and Webmin (tons of settings).
For money (cheap) is CentOS webpanel, but only for CentOS and without pay you not get security (like Mod_security+OWASP rules etc.). Big minus is in the monthly paying is not included support, the support is big money:
http://centos-webpanel.com/support-services