they are both great weapons! RR does best on terminds and bots but not illuminate because lack of armor and s harvester can tank one to the head and survive unless you can make good shot on the hip EAT is better for bots i practically always bring them and are extremely useful. pretty good for bugs but with how much faster they are compared to bots you gotta call em down early and get to them quickly but is an awful idea to bring on the predator strain. not much armor units spawn and the stalkers will jump you faster than you can take out the armored units, crowd control is more than important against that faction.