Going back a bit, Gottlieb dominated the 1950's with a slew of
epic pins. I also like the series 1 & 80 from the same maker.
Williams/Bally from the 1990's, especially pins like ST:TNG.
Williams had many good EM's and early SS pins such as
Aztek and Gorgar. Later pins like Black Knight dominated the
later 1980s.
Just my opinion based on pins I've had.