For Manjaro, it remains to be seen how the restructure will workout. They will become a non profit organization. The previous leadership (phil) was one of the reasons why I stopped using Manjaro a while ago, maybe 2 years by now. Just looked into the link a bit and... it's worse than I thought.

Ubuntu has its own problems, but I think if the core infrastructure and leadership cannot be trusted, then no other decision on the project matters. So my personal vote would go for Ubuntu and against Manjaro, if I were to decide which of them to use.