Right now, it depends heavily on the role I envision my ship filling. In a Mon Mothma list, where they're usually the alpha strike and often trying to kill ships before shields are completely gone, I like getting the crits in there early and often. In my Cracken list, where TRC90 are already overloading shields, I like the MC30 as an executioner, which suits ACMs.
Sato ACM MC30 Scouts have me intrigued. Similar philosophy as TRCs: pound the damage early and often.