Advanced Dungeons & Dragons Review
Ranked in these QuestionsQuestion Ranking
Pro Has a vibrant online creative community
The Old School Renaissance community has a significant online presence on Blogspot and Google+, and features some of the most creative minds in fantasy gaming, all offering their ideas to the gaming audience for free or for generally low prices on PDF storefronts. As they aren't bound by Wizards of the Coast's need to cater to a mass market, they aren't obligated to present only a single "flavor" of fantasy. People playing 1st Edition (or one of its many available retroclones) will have no lack of material and inspiration to draw from.
Pro Cover art and visual representation in the mind is great
Pro Gary Gygax's personal touch
Later editions were, to varying degrees, designed for market appeal; but the original AD&D is little more than one man sharing notes on his personal vision. It's tailored to his thematic tastes, and very often as much care is put into explaining the reasoning behind a rule as into defining the rule itself.