When comparing Siduction vs Debian Unstable, the Slant community recommends Siduction for most people. In the question“What are the best rolling release Linux distributions?” Siduction is ranked 15th while Debian Unstable is ranked 29th. The most important reason people chose Siduction is:
Apt/Aptitude, debconf or the alternatives system.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Debian based
Apt/Aptitude, debconf or the alternatives system.
Pro Updates are slow, but stable. It is based on Debian after all.
It uses Unstable per default so it is still some kind of stable since all dangerous packages are tested in experimental first.
Pro Secure Boot support
It supports secure boot which is great for LiveCDs and dual boot systems.
Pro Great for Desktop use
It is great for your daily desktop Linux due it good balance of stability and recent packages - it is also recomended by the debian project as the distro you should choose for desktop systems.
Pro Up-to-date software
Cons
Con Hardware recognition is bad compared to Ubuntu.
Siduction won't install any non-free drivers by default.
Con Development version
Debian Unstable is intended as a development release, and as such is much more likely to break.
Con Not for users new to Linux
You need to know how to maintain Debian Unstable or you can easily bork your system. There isn't very much information available on how to maintain Debian Unstable either. I was fortunate enough to be involved in a now defunct Linux distribution where a forum member put together a how-to on how to upgrade Debian Stable to Debian Unstalble, as well as a separate forum where users could post tips or ask questions about Debian Unstable. One source I would recommend is the Siduction forums.