Firestorm (1978-) #2
I thought this was a fun second issue. It establishes the dynamic between Ronnie and Stein going forward. It also gives Firestorm his first ,and one his most famous,supervillian.Superman was also a standout.It was great how he was so eager to learn about and then starts to mentor him. Great issue.
It can see this issue as a template for interactions between Superman and Firestorm in the Doomsday Clock maxiseries.