I'm a late fan to the genre, but Super Sentai: DAMN that's some good shit!
MMPR are a *very* watered down and sanitized version, but they still serve as an effective gateway.
"The strongest warriors are on parade!"
www.youtube.com/watch?v=tKqZUL…
I'm working through the more-recent Sentai arcs with the aide of this diligent archivist: