Off the top of my head, I can definitely recommend Magiranger. It might seem that way and there all elements of being aimed at a younger audience, but it holds its own quite well in spite of that fact.
I can seriously recommend Shinkenger, but yeah, it's definitely a more serious toned sentai. I tried Goseiger, but it failed to hook me, really and I stopped when I realised I was forcing myself to push onward. Gokaiger, the current one is another more serious toned one, with references to every other sentai ever and one of the more interesting power set gimmicks they've run. Gokaigers are munchkins. And hey, their leader is named Captain Marvelous.
On the Kamen Rider side, I second the Ryuki recommendation. Just started Double but I am liking what I've seen of it so far. I have less familiarity with Kamen Rider beyond those two, though.
Hope this helps! (And yeah, TV-Nihon is, so far as I know, the place to go for Sentai & Kamen Rider
"This hand of mine glows with an awesome power. Its burning grip tells me to defeat you....
Shining FINGER!" -Domon Kashuu, Mobile Fighter G Gundam
I can seriously recommend Shinkenger, but yeah, it's definitely a more serious toned sentai. I tried Goseiger, but it failed to hook me, really and I stopped when I realised I was forcing myself to push onward. Gokaiger, the current one is another more serious toned one, with references to every other sentai ever and one of the more interesting power set gimmicks they've run. Gokaigers are munchkins. And hey, their leader is named Captain Marvelous.
On the Kamen Rider side, I second the Ryuki recommendation. Just started Double but I am liking what I've seen of it so far. I have less familiarity with Kamen Rider beyond those two, though.
Hope this helps! (And yeah, TV-Nihon is, so far as I know, the place to go for Sentai & Kamen Rider
"This hand of mine glows with an awesome power. Its burning grip tells me to defeat you....
Shining FINGER!" -Domon Kashuu, Mobile Fighter G Gundam