||Beginner to Advanced Server
||De facto Linux Standard, easy to use, good installer
||Has some odd conventions
||Intermediate to Advanced/Server
||Good all rounder, good manuals & docs
||YAST 2 Installer has had troubles
||Beginner to Intermediate
||Very easy to use and set up, nice control panel
||Not as professional as some others, mainly home oriented
||Advanced to Server
||A professional linux system, made for server market
||quite hard to install and use, is not an RPM based distribution, on the upside, it installs .tar.gz archives much easier than RPM based distros.
||Intermediate to Advanced
||Very into the whole Free GNU thing, a Linux standard. DEB packages are good.
||Further behind than some other distros, but rock solid!