I've installed Arch, Arcos and Manjaro (from the Arch based distros). Manjaro and Arcos are faster and easier to install and setup compared to Arch. Manjaro has nice GUI to select kernel, GPU drivers and install software (and does not automatically move you to the newest kernel, as opposed to Arch or Arcos). They had fucked up (I think 3 times) with renewing their SSL certificate, and for a short while their ISOs were unverifiable (not that big of an issue if you ask me). Since they delay their packages' updates, running them in testing for a few months for extra stability, installing from AUR is bound to break.
I've installed Manjaro on 3 computers, and worked with it extensively for about 3 years. It's a decent distro that doesn't deserve all the hate it gets.
It's always best to fire your top general just before going to war. He must have learned that from Stalin and Putin.