I would actually disagree with the 'default interface' statement, at least in the case of both Fedora AND Ubuntu. With Fedora, you can get into depth and customize it, but if you wanted, say KDE, you would normally use the KDE dedicated spin. Same for Ubuntu, which also defaults to non KDE. For that, you would use Kubuntu. It's not always as 'simple' as 'just choose the ui you want' because many different changes have been made that you wind up with packages you dont need, may have conflicts, etc.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.