Awesome Music: For a series that has weaponized sound and musical instruments, it is to be expected to have a lot. Kagayaki, the 1º opening, takes the cake.
Broken Base: The second half of the series. The general consensus seems to be that those who liked the mold-breaking approach of the first half disliked the second, but those who preferred the franchise's more traditional style prefers the second half over the first.
Tough Act to Follow: Oddly, Hibiki is this not to it's direct predecessor, Kamen Rider Blade, but rather, Hibikiitself. This is mainly due to the Retool - the first half of the series is very different from a traditional Kamen Rider series, whereas the second half is more akin to a normal one. While the first half does have people who dislike it because of how different it is, it's seen as the stronger of the two just because of how different it is.