When comparing PCLinuxOS vs Kubuntu, the Slant community recommends PCLinuxOS for most people. In the question“What are the best Linux distributions for desktops?” PCLinuxOS is ranked 38th while Kubuntu is ranked 45th. The most important reason people chose PCLinuxOS is:
The distribution is continually updated, so there's no need to install OS upgrades by hand.
Specs
Ranked in these QuestionsQuestion Ranking
Pros


Pro Rolling release
The distribution is continually updated, so there's no need to install OS upgrades by hand.

Pro Stable
PCLinuxOS is designed around stability.

Pro Multiple desktops available
Mate, LXDE, and KDE desktops are available.

Pro Can remaster the boot DVD
PCLinuxOS has built in tools for remastering bootable DVD into a copy of current install.

Pro Excellent hardware compatibility
Comes with nVidia drivers out of the box. Important if the PC has an nVidia chipset. Most Debian based distros don't have nVidia drivers available at install time.
LXDE version works well with older hardware.
Pro Full featured desktop environment that is actively developed
Unlike some abandoned, unfinished distros, Kubuntu is up to date and offers a fully functional desktop environment that targets workstation users.
Pro Stable as hell
Super stable, never crashes.
Pro Good hardware recognition
Pro Everything is highly customizable
Pro It also has paid technical support available
Pro Comes preinstalled in several laptops and desktops
Comes preinstalled in several laptops and desktops. (Tuxedo, Slimbook, laptopWithLinux.com, Kubuntu Focus, Vant and other companies).
Pro An outstanding number of packages and PPAs, backports PPA
Pro Kubuntu Focus Suite provides highly tested, curated ecosystem for pros
Pro Very stable
Kubuntu is very stable, you can easily install the appropriate Nvidia drivers for your machines, and not have dependency problems whatsoever. KDE offers a great user experience, and Dolphin is a great file manager.
Pro Customizable
You can easily adjust the workspace to your needs.
Pro Light
Cons
Con Installation fails most of the time, error messages, and hard to go to full screen in virtual box

Con Uses RPM packaging system
Uses the RPM packaging system with APT, rather than the more popular DEB packages.
Con Often unstable
There have been several bugs reported. Some of these bugs are: shutting down randomly, refusing to boot, refusing to shut down, menus may act strange, icons may disappear, etc.
