If this is in dom0 on Qubes 4.1, then Fedora 32 is to be expected:
https://www.qubes-os.org/doc/supported-releases/#dom0
I think that question is unanswerable until you define “best.” When it comes to things like this, it’s generally recommended not to mess with the defaults, unless an official source says so or you know what you’re doing. You could break your system or weaken your security in ways you don’t understand.