There is not a specific reason why you should choose Xray_OS Linux, because this distribution is just something that I did for my personal use.
Though.. if you still want me to make things look nice, which actually it actually is, well here are real reasons why you should:
Generally optimized and with minimal bloat for maximum performance
Standard security practices configurations and regular updates
Modern and elegant interface, thanks to a well configured KDE Plasma
Pre-configured development environment with latest tools