what's the best linux for ror?

I'm using windows, but want to try linux, which would be a good choice?

Yes.

I installed ubuntu once, but I hardly used it, so I'm thinking on
installing it again, but, I would like some suggentions

Ignoring version numbers, 99% of the software on a given Linux distro
will be the same as any other. And if it isn't you can upgrade it
yourself from source.