Neos is basically a lower budget straight to dvd version of the original ultraman, which if you feel like a quick easy ultraman to watch is perfectly fine

Both focus on teachers, have the same kind of special effects and sense of fun. If you are looking for a retro toku these are good choices

They have the same producer and other connection that you see when watching king-ohger. They are both fun shows

Both feature a lot of rider on rider fighting and explore similar themes of growing up with many character having their ideals challenged

Both gender change plots that explore how the change effects the romantic life of the main characters.