(I like Mark's term below: "trail jogger.") I don't do anything more than 5-7 miles. But I use Saucony Peregrines and they do the trick.

I haven't tried a bunch of others, though; my only points of comparison are the various "standard" running shoes that I used to take out on the trails occasionally. The Peregrines certainly handle rocky and loose terrain a lot more comfortably.