[jurianbai]

well, seem like my "worry" is correct, the board is majority by non sentai member, eg. western. it's ok, I think this thread can be for general sentai/p.r. talk. Here what I try to answer your inquiry, the Power ranger tradition started on sentai title "Zyuranger". I edit this from wikipedia :

Mighty Morphin Power Rangers 93-95 used footage, costumes, and props from three of the Super Sentai Series: Kyōryū Sentai Zyuranger for season 1, Gosei Sentai Dairanger for season 2, and Ninja Sentai Kakuranger for season 3
Mighty Morphin Alien Rangers 96 - Kakuranger
Power Rangers Zeo 1996 - Ohranger.
Power Rangers Turbo 1997 - Carranger
Power Rangers in Space 1998 - Megaranger.
Power Rangers Lost Galaxy 1999 - Gingaman.
Power Rangers Lightspeed Rescue 2000 - GoGoFive.
Power Rangers Time Force 2001 - Timeranger.
Power Rangers Wild Force 2002 - Gaoranger
Power Rangers Ninja Storm 2003 - Hurricaneger.
Power Rangers Dino Thunder 2004 -Abaranger
Power Rangers S.P.D. 2005 - Dekaranger
Power Rangers Mystic Force 2006 - Magiranger.
Power Rangers Operation Overdrive 2007 - Boukenger.
Power Rangers Jungle Fury 2008 - Gekiranger
Power Rangers RPM 2009- Go-onger
Power Rangers Samuraito premiere in early 2011 - Shinkenger

to what I remember the MMPR was the one I follow closely. I read that some of middle season is not very succesful due to vague adaptation, but thing started up after the Wild Force season. I heard the last season RPM is quite succesful also.