The best choices for everyday OS

 https://nxos.org/  ~3GB install dvd

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https://www.linuxliteos.com/  ~1.4 GB install dvd

https://antixlinux.com/  ~1.1GB install dvd

https://q4os.org/  ~464MB  install dvd

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The Long Term Support release codenamed 'Centaurus' gives you five years of security patches and updates, it will be supported until July 2024 at least.

• Q4OS Centaurus, Plasma, live - 64bit / x64 ... 894 MBytes ... setup guide
• Q4OS Centaurus, Trinity, live - 64bit / x64 ... 697 MBytes ... setup guide
• Q4OS Centaurus, Trinity, install-cd - 64bit / x64 ... 464 MBytes ... setup guide
• Q4OS Centaurus, Trinity, install-cd - 32bit / i386 ... 426 MBytes ... setup guide

 You can download either a lightweight efficient Trinity desktop, or more advanced Plasma desktop edition. Live media allow users to get a quick Q4OS experience, or try it out on a real hardware without installation. If satisfied, an optional installer is available. Use the install-cd media for older 64bit as well as 32bit machines.
 The minimal hardware requirements are defined as follows:
Plasma desktop - 1GHz CPU / 1GB RAM / 5GB disk
Trinity desktop - 300MHz CPU / 128MB RAM / 3GB disk

Installer for Windows

 The easiest way to put Q4OS alongside Windows. Just run the setup guide from within Windows and install Q4OS as easily as any other application. Windows 10/8/7 compatible.

• Q4OS Centaurus, WinSetup.exe - 64bit / x64 ... 20 MBytes ... video guide, setup guide