I wrote a massive wall of text on hero / aspect pairings, but I think player count is even more important than that.

I can take a solo Marvel / Aggression and do pretty well whereas a SheHulk / Protection got smoked in my games. ( I think Stark would have the same issue Solo, as card draw is a real problem for both - at least until the tech upgrades are installed)

What are your pairings you have found effective and at what player count?