A beta of Fedora 18's installer completely wiped my hard drive. I told it to partition the drive. It partitioned it, installed Linux fine, and ALSO formatted every NTFS partition to a fresh EXT4. Even for a beta, this is a sign there's something seriously wrong. After using SuSE for years, then Ubuntu for years, then a very brief love affair with Fedora 17 KDE (mainly, delta RPM updates), I returned to OpenSuSE after 10 years away and probably will never switch away again. As far as integrated admin tools and the installer, OpenSuSE's have always been exceptional.
Also, my reason for switching from DEB to RPM-based distro was it seems Debian's core package management tools haven't seemed to evolve much in years while RPM appears to have improved quite a bit. The delta-compressed updates is a huge deal for me, but also the general speed of the tools. OpenSuSE's zypper tool also gives a bit of freedom in installing 'unmatched' later versions of libs but if things go wrong, it's easy to trace and downgrade. Also, the package management tools integrate with btrfs snapshots and there's a powerful tool called 'snapper' which gives you quick access to rollback or version diffs.