I've run NixOS for almost a decade now and I honestly would not recommend anything else. I've had many issues with booting on almost every distro. They're about as reliable as Windows in that regard. NixOS has been absolutely rock solid; beyond anything I could possibly have hoped for. In the extremely rare case my system would not boot, I've either found a hardware problem that would affect anyone, or I could just revert to a previous system revision and boot up. Never had any problem. No longer use anything else because it's just too risky