Ranked in these QuestionsQuestion Ranking
Pro Extremely reliable
The packaging team is dependable resulting in system updates that come in a timely fashion and systems which rarely, if ever, break due to packaging. The versions of software that are selected and the configuration of them is typically extremely high quality.
Pro Easy installation and administration
openSUSE makes use of a GUI tool called YaST to install and setup an openSUSE system.
YaST is very easy to use and makes the process of installing and maintaining an openSUSE installation a breeze.
Pro One-Click install
Much better system then other distros for installing any package. It is as simple as clicking on one button and typing in your password. Adds a repo to your system keeping everything updated at the same time.
Pro Easily get packages from other sources
SUSE Build Service offers packages from the same sources as Fedora, Debian, Ubuntu, SUSE Linux Enterprise and other distributions. This is the most underused package tool in Linux today.
Pro Probably the best KDE desktop experience
Both Gnome and KDE desktop options are well polished to fit with the opensuse theme and environement, so either desktop is a great choice.
Pro Very stable
Stable, reliable, rock solid.
Pro "Tumbleweed" Rolling Release
Regular and easy upgrades to stable and well tested software.
Pro Supports RPM packages
Popular format shared with distros like Fedora, RHEL, Scientific Linux, Mageia etc.
Pro Convenient package management with Zypper
Fast, reliable, powerful and almost impossible to leave a broken system.
The Yast interface will also give you access to a Zypper GUI if you are uncomfortable with the command line.
Pro Amazing choice for both newbies and power users
OpenSUSE is very easy in terms of installing packages, administration and customization, yet very powerful in the same. Every user should find his own piece of cake in this OS.
Pro Outstanding community support
OpenSUSE has a VERY active user community. Questions on forums are generally answered in minutes.
Pro Dedicated professional community
Directions on other desktop Linux's often force you to use GUI packages or have steps that introduce security issues.
OpenSUSE has a professional community and directions are usually geared toward GUI and CLI with similar steps.
Con Poor support for nVidia drivers in Tumbleweed
No native driver support and nouveau may be broken, especially for KDE, and not suitable for some GPUs.
Con Limited community support
The community is fairly small, and there is no indication on the forums regarding when a issues will be solved.
Con Short lived distro
Every release lasts 18 months only before needing a major upgrade.
Con Old kernel by the Leap version
Kernel in Leap 42.3 is in version 4.4, that's pretty old.
Con Some clear differences from other Linux distros
This might be a systemd issue or OpenSUSE specific, but changing certain text files does not update things. They must be edited in YaST, or in /etc/sysconfig/