Going through yet another update thread, I want to post a short note on my experience. I have been using Manjaro as my only OS for the last four years, and I am still on my first install since then. It was a new experience as I was switching from the Debian/Ubuntu world. I had to adjust my update habits to a whole new process. Doing a lot of reading, I came across two things that were extremely helpful:
System Maintenance
Update Manjaro the smart way
They are in my bookmarks, and I reread them every now and then.
Additionally, create, verify, and test your backups (obvious, I know, we all do them, right?).
Last but not least, keep learning your system. The Manjaro is a rolling distribution. It has perks, but with great power comes some responsibilities. 
Thanks Manjaro Team, and many happy updates to all of us.