Thanks for this. I will look for them on DVD, as I don't like streaming.For a quick overview, there's a wiki dedicated to both series.
All of Power Rangers is on Netflix, and Shout! is release Super Sentai seasons on DVD in the west every year (although unfortunately they are only sticking to the ones that got adapted to Power Rangers). Fansubs have translated pretty much all the seasons however, so there's no difficulty in finding the shows.
Modern Power Rangers shows (the ones since 2011) have become very childish and obnoxious, so I wouldn't recommend those; but Power Rangers RPM is a pretty cool season that shows how different the series can get from MMPR. If you want to watch Super Sentai, Gokaiger is a no brainer, as it's a season that works on it's own while also introducing you to stories from past seasons.
I see there's also a bunch of DVD movies. And here I thought there was only the original MMPR movie and Turbo movie.