When comparing SteamOS vs Antergos, the Slant community recommends Antergos for most people. In the question“What are the best Linux distributions for desktops?” Antergos is ranked 8th while SteamOS is ranked 38th. The most important reason people chose Antergos is:
ArchLinux is rather hard to install using command line. Antergos's advantage is the easy installation using a GUI. So instead of manual installation of software you can just download Antergos which does things for you automatically.
Ranked in these QuestionsQuestion Ranking
Pro Native graphics processor support
The OS natively supports Nvidia, Intel, and AMD graphics processors.
Pro Streaming service integration (under development)
Valve is in talks with streaming companies such as Spotify and Netflix to bring their features to SteamOS.
Pro For entertainment, it just works
What media center software do for videos, it does for games (and later videos).
Pro Easy to install
ArchLinux is rather hard to install using command line. Antergos's advantage is the easy installation using a GUI.
So instead of manual installation of software you can just download Antergos which does things for you automatically.
Pro Rolling release model make it easy to keep apps on updated versions
Antergos is a rolling release distribution (as it's based on Arch Linux). Your entire system, from the base OS components to the applications that you install, will receive updates as they are released upstream—with only a minimal delay to ensure stability.
Pro Offers choice of desktop environment on installation
Ability to choose your preferred desktop environment on installation.
Pro It comes with every essential utility pre-installed
Pro Arch User Repository access
It can visit AUR to build packages.
Pro Surprisingly stable Linux desktop
From popular distros of rolling and standard releases, compared to Debian (stable) and Arch, Antergos stability rocks. Debian is stable, however, it's with old packages and Arch. The only thing that broke it, so far, was compiz-manjaro (C++ 0.9 branch) from AUR, but compiz in Antergos repositories is 0.8 and it is working flawlessly.
Pro Offers minimal ISO download
Pro First Linux desktop that makes Windows look bad
Antergos has very nice default themes (KDE/Plasma and Gnome/GTK), which combined with Compiz 0.8, makes Windows looks sad. Antergos can even compete with Windows in regards to stability.
Pro Excellent graphical package manager (Pamac)
Features include: providing notifications of available updates; mirror management; AUR support (with the option to suppress unnecessary confirmations during the install process); update settings (frequency, whether to check for updates from the AUR, packages to ignore updates for); and a history of packages installed, updated, or removed (from the official repositories - AUR packages are not currently tracked).
Pro Extremely fast
Everything runs at the speed of light. Antergos is super responsive and programs/apps runs effortlessly.
Con Not built around the desktop experience
SteamOS is, first and foremost, meant to act as a gaming console - it doesn't ship with even some of the most basic applications, such as a file manager or image viewer. As a result, using SteamOS as your primary operating system would require a fair bit of work.
Con Hard to install
If you've installed Arch you're probably fine, but for those used to simple installs like (Ubuntu to name just one) you should prepare some patience, determination, and painkillers. Good news is, it's getting better (it's very young).
Con The installer breaks often
The installer, cnchi breaks all the time. It's very buggy.
Con Rolling release problems
Rolling release is quite pain sometimes. You might face some problem with a bugged application since you always get the latest version.
This problem is a little bit solved by Manjaro distro where applications are tested but updates are slower than usual.
Con Package popularity is not visible in Antergos repositories
Small issue, but would be nice to see package popularity in Antergos repos, just like it is visible for AUR. packages.
Antergos with AUR gives access practically to all possible packages, so popularity could help in this sea of packages.