just blasting chaos run, everything else is inefficient. everything can be dropped in chaos sanctuary and layout the same. density also the best in game, every game there 10+ elite pack if you include seal boss
Big fan of CS, but
Note that Dia's three Lieutenants and Dia himself cant drop everything in the game.
Only the random uniques can drop everything, which bums me up but it is what it is.
Unless it is under TZ, of course, then every mob can drop everything (given the TZ level is high enough)
Most of the items that cant be dropped are irrelevant for trading tho.
Would also like to add CS has the best atmosphere in the game, is the most mythical area, and sums up what the whole game is about.