You can argue about quality I guess, but how would Ubuntu be ‘more mature’ than Debian?
Ubuntu (and Kubuntu) have never bricked all of machines after an update, Debian did, in recent years at that. So I will argue quality in favor of Ubuntu (and Kubuntu).
Ubuntu (and Kubuntu) have never bricked all of machines after an update, Debian did, in recent years at that. So I will argue quality in favor of Ubuntu (and Kubuntu).