I am currently on Manjaro with i3 on my work laptop. I will be moving off soon.
I chose Manjaro because they had an easy setup and I liked how their i3 was handled. I have been using it for about a year now. My main pain point with Manjaro is pamac. One thing I have learned to do, like @BjornHK, is not to update often. My sweet spot is once a month. But there are times I need to install some software, and I am not quite ready for an update. Pamac forces the update, before installing the software. 