I plan on running the Against the Giants series and afterward the Descent into the Depths of the Earth series, both in Pathfinder. I had both played and DMed them in AD&D. I ran Against the Giants in 3.5 edition and it went very well, but did not attempt Descent into the Depths of the Earth. In 3.5 my groups used Menzoberranzan quite a bit, and I will probably use that city rather than Erelhei-Cinlu as it is much better established. I will start the characters, probably five or six, at ninth level. As source material, I will probably need to buy the Darklands Revisited book. Does anyone have any reviews of that book as useful or not? Are there any other books that would be helpful?