I'm gonna pitch in with this site is intended for single-use applications, such as Microsoft Word is designed for editing documents, it is not designed for editing photographs or movies. In the same vein, a developer oriented gui merge tool does not create CD-Rom images.
In this sense, a Linux distro is actively a thing of research and passion, as well as platform alignment, but it is in no sense a single-use application. Indeed, the mere fact that there are many ways to configure a given distro (think Ubuntu vs Kubuntu) and still retain the core commonality should be evidence that this will be a tricky question to answer.
I vote that it is not appropriate for this site, as that is too wide ranging.