I personally prefer OpenSuSE, but Fedora is reasonably close second.
One reason OpenSuSE wins out for me is admittedly just because it's not a US based project or related to a US based company like RedHat. Not that SuSE is "good" as a sponsor company; it's just based in Germany and owned by a Swedish investment company, which edges out based in the US and owned by a mega corp like IBM. I know both OpenSuSE and Fedora are mostly independent, but both are under some control of their main corporate sponsors. So I prefer European.
Maybe that's silly, but I have lost a lot of trust in the US legal system, project governance and their ability to exist without interference by the US state.