RebornOS vs Manjaro? That decision is up to the end user. RebornOS is a distribution thought with the ease of installing an environment based on Arch Linux, plus the addition of some details of its own. We have a repository where you can find some utilities and programs that we keep up to date, to make things easier. While manjaro updates have their own rhythm (and control), here we follow the rhythm of Arch Linux, with everything that this brings: having the latest generally before, which can sometimes mean some small inconveniences, which are quickly solved. RebornOS for us is a feeling, the people who develop and maintain it, we try to offer the best to the end user. But we can't make a comparison, that's in the hands of whoever wants to use one distribution or another. Everyone will look for what they like best.
If you decide to use RebornOS, you are welcome! We will try to help you as much as possible!
Fitz, I haven't used Manjaro for a while but this is my opinion of Reborn vs Manjaro.
The Reborn installer is an easier way to install real Arch Linux. Manjaro is "based" on Arch, but has it's own development cycle. Consequently Reborn is a real rolling release - as soon as an update is released for Arch it's also available for Reborn. It usually takes Manjaro a while to release updates.
Reborn has just one ISO that can install many different desktops - as well as GNOME, KDE, XFCE, there are other options like Deepin available. With Manajaro you have a limited number of desktops I think XFCE, GNOME and KDE. You have to download a different ISO to install each desktop.
Those are the 2 biggest differences I can think of.
Old age and treachery beats youth and skill every time.