How Should One Review a Distribution?

Chilliwilli asks: "Why are are good distro reviews so few and far between? Every review I've read recently seems to follow this unoriginal pattern. Big cheers about a nice easy graphical install followed by one or two driver problems blamed on hardware manufacturers. Then the rest of the review seems to be everything worked out of the box. Menus contained usual items. Software versions are X, Y and Z. See OSNews for many examples of such reviews. From the reviews I've currently read all distros seem pretty much the same, is there a reliable source for interesting, impartial and full reviews? Are there any guidelines for distro comparisons? What should people really be looking at when reviewing a distribution? I guess the broader question is what sets distros apart?"