Most of them are much, much better. The original had a good cast, but atrocious writing. From Power Rangers Turbo onward, the storytelling got a lot richer and more sophisticated, though the casts weren't nearly as good as the original group. There are some real standout seasons, with Time Force and RPM being the smartest and best.
thanks bro. which one is the best
Already answered. (Emphasis added.)
To date, there's nothing since RPM
; it's the most recent season so far aired. The next season, Power Rangers Samurai
, premieres next month, and from the previews, it looks pretty lame.