[NGW]

Tossup between Zordon and post-Zordon era. The Zordon era has by far the biggest nostalgic pull for me, but there's a spattering of post-Zordon seasons i consider to be among the best in the series (Time Force being up there with RPM and Jungle Fury as my all time favorite seasons).

Edit: The shared continuity/continuous story of the Zordon era gives it the nudge though. You just don't see that very often these days.

Edit Edit: Surprised to see someone list SMF as their second favorite season. To each their own and all, but that season is almost universally reviled.