When comparing Fedora Silverblue vs SparkyLinux, the Slant community recommends SparkyLinux for most people. In the question“What are the best Linux distributions for desktops?” SparkyLinux is ranked 67th while Fedora Silverblue is ranked 93rd. The most important reason people chose SparkyLinux is:
You have access to a large user repository, Ubuntu guides can mostly be applied since both are based on Debian.
Specs
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Pros
Pro Faster reboots when upgrading
Because Fedora Silverblue uses rpm-ostree, upgrades are performed by creating a new "commit" and reboots simply boot into the new commit, making the time to reboot during an upgrade faster than regular Fedora, which applies updates during the reboot.
Pro Based on Debian
You have access to a large user repository, Ubuntu guides can mostly be applied since both are based on Debian.
Pro Rolling or Stable Choice
You have the option for Sparky to be based on Stable or Non-Stable, bringing greater flexibility to user priorities.
Pro Lightweight core
Sparky is designed to be lightweight in it's core. It is based on Debian but optimised for old hardware, meaning you can run a full heavy desktop environment on a lightweight foundation, bringing greater performance compared to similar Debian or Ubuntu-based distros.
Pro All vanilla desktop environments available
Any Linux desktop in it's vanilla form can be installed on top of Sparky, whether that be alongside a pre-existing environment, or on top of a basic command line system. Furthermore, the command line system is easy to operate due to Sparky's advanced installer utility, from which you can choose whichever desktop environment you desire, straight from the Debian repositories. Guidance is on their website.
Pro Rolling Release
Cons
Con Installing using rpm-ostree is more cumbersome
After updating or changing the installed packages, Silverblue requires a reboot for changes to take effect, unless the experimental apply-live command is used (rpm-ostree ex apply-live).