in my experience hero venim pulls all the way inside the circle then release and pull again and was better than legendary venim
leg venim just keeps pulling and enemy mobs randomly pushed everywhere

anyway if you going for hauntlet energy farm pet i recommend using haste pet aa with haste hb so arc sen or garlic for hb and hero harry or normal harry for aa
*leto aa gives haste too but you need to be close to your pet to get the bonus but harry just gives you the buffs directly