There is no best distro because each distro has different target users. It depends on what you want to use it for.Hey I'm looking for the ULTIMATE Linux
My favorite is Backbox Linux. It is a hacking distro based on Ubuntu. Being an Ubuntu user for years, I can retain my favorite software from Ubuntu in Backbox. It comes with built-in TOR mode (anonymous mode), much lighter and easier to use than Ubuntu GNOME too.Just Comment what youre favroite is!