I really think that Arch is vastly preferable. Manjaro is highly oppinionated and does a lot of "weird" things. Having their own package repository, while offering the AUR isn't a great idea, neither is trying to ship a non-free office by default.
In my experience it is significantly less stable and using an Arch based distro without the basic knowledge of an Arch system seens like a recipe for frustration.
In my experience it is significantly less stable and using an Arch based distro without the basic knowledge of an Arch system seens like a recipe for frustration.