Drop rates are unaffected by terror zones. The drop table can change as the area level increases, but the odds remain the same.
Trav with hork barb or any areas with large volumes of monsters that you can clear quickly are your best bet.
the areas i know thx...but i dont have the runes at moment... i found windforce, nightwigs, df, 2x tal set, 10 shakos... but only 2 vex and some ists ...and i made a hoto and a cta...for barb i need grief i dont wanna run with oath... i like sorc most but at moment i run blizzard sorc
i just didnt know if terror zones are better for hrs.... and i think more kill speed is better than a higher player count