When comparing Tails vs PCLinuxOS, the Slant community recommends Tails for most people. In the question“What are the best Linux distributions for desktops?” Tails is ranked 26th while PCLinuxOS is ranked 37th.
Ranked in these QuestionsQuestion Ranking
Pro Privacy focused
Pro Has TOR built-in
Use the Internet anonymously and circumvent censorship; all connections to the Internet are forced to go through the Tor network.
Pro Rolling release
The distribution is continually updated, so there's no need to install OS upgrades by hand.
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.
Con Not for daily use
Tails is a privacy focused Linux distro. The updates that you will receive are only for improving privacy and not for improving user experience.
Con Saved states are not present for security
For security reasons, saved states are not supported in Tails. Files can be stored in a separate, persistent volume which must be accessed with a root password. Personal settings (e.g. -- keyboard layout, window settings, etc.) are not saved persistently across reboots. This can be a hindrance for anyone not using English as their language, or not using a QWERTY keyboard layout.
Con You can't install it to a hard drive
Con Slow internet
Tails uses the TOR network and as a result the internet on your computer will be very slow.
Con Only GNOME desktop environment
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.