Tumbleweed is stable enough to use every day. Updates are OpenQA tested to ensure stability before being released for Tumbleweed. Bleeding edge untested software can be tried using OpenSUSE factory.

Pro
Easy installation and cutting edge apps

Pro
A large amount of software

Pro
Tumbleweed + OpenSUSE Build Service

Pro
Good selection of preinstalled applications

Pro
User friendly + Good support

Active and friendly user community, updates come fast

Cons

Con
Little / no third-party support

Like it or not, most third parties don't want to deal with less-popular distros. So most of them only support Ubuntu LTS and those versions of RHEL/CentOS that are still supported.