Truthfully i rather like ER with Secret tech, because when i hit 3-5 stacks i dont need to ensure i have max combo points, i just pop ER and then ST for the full effect.
In 10.2 though i have a build that has me not picking ER simply because Shadow Blades now does max combo points so during Blades, i wont need to be worried about combo points. Not sure if i’ll keep that build or not but i wont know until its live