Um, all of the above but the first two. I only occasionally run published adventures, and campaign worlds I sort of pick at, but generally stick with my own stuff. The remaining stuff, PrC, monster, and other mehcanical books in about equal measure. Other flavor books -- like what? Don't really add much so long as the aforementioned mechanical books have enough flavor of my own. Flavor books tend to clash with my own ideas, so I usually don't like them.