[Starscream Gaga]

Megaranger also is subbed by Millionfold Curiosity. They've been updating very regularly and only have one episode left. By the time you reach it, they'll have finished the series.

My first Sentai was Gokaiger and I fell in love with it. I had already seen every Power Rangers season but was reluctant to get into Sentai, but I was convinced to watch it with my partner and twin brother and its my favorite season of Power Rangers and Super Sentai combined. It doesn't need any prior Sentai knowledge because, as people have already said, the main characters know nothing about Sentai either and it really helps introduce the history of Sentai as well as how awesome some of the previous teams are. Outside of being an anniversary season, it has a great main cast who mesh really well together and are all very memorable and a good set of villains who have a great ensemble of both extremely threatening and very humorous as well as including an interesting arch-rival character. From, Gokaiger, I really wanted to watch the other Sentai series and have been going through them ever since. Its also the only Sentai/Power Rangers season outside of Jetman that my twin brother wants to watch as well, which I think supports the fact that it doesn't rely on being homage after homage.

Basically, I'm a huge Gokaiger fanboy, so I say start there!