Recs.
Updated
SpecsUpdate
Pros
Pro Excellent graphical package manager (Pamac)
Features include: providing notifications of available updates; mirror management; AUR support (with the option to suppress unnecessary confirmations during the install process); update settings (frequency, whether to check for updates from the AUR, packages to ignore updates for); and a history of packages installed, updated, or removed (from the official repositories - AUR packages are not currently tracked).
Cons
Con The Manjaro unstable repository is slow to sync with the Arch stable repository
The Manjaro unstable repository syncs with the Arch stable repository and if any package has moved, it gets moved to stable.
The issue here is that this is not done frequently, which means that Manjaro may be getting package updates much later than Arch.
Con You can't change the default theme in certain applications
Although it is possible to change the default dark theme, this has no effect on Firefox, which appears to have the dark theme "hard coded". Hardened Linux pros may find a way to change this, but for the rest, it renders an otherwise nice distro a no-go.
Con Multi boot problem
It's possible to lose Manjaro in a multi-boot PC. The OS is great, but having it not boot can be frustrating. You may be tempted to swap it for something like Ubuntu Gnome. GParted may still show Manjaro, but Boot Repair and your "Boot any PC" disc might not fire it up.
Recommendations
Comments
Flagged Pros + Cons
Con Security issues
Since packages are not updated as fast as in Arch, critical security updates may not come as fast as needed for packages that may have issues.