I voted 2. The series wasn't interesting until episode 32 for me. A large part of this is how I disliked almost all of the riders. Kenzaki is boring for most of the show, Garren was really bad at the start of the show, Leangle's flip flopping was dragged out for WAY too long, Chalice was fine.
And I hated the ending, because while Kenzaki's plan was kind of clever, letting all of those monsters kill thousands of people because he refused to kill "that person" (trying to avoid spoilers) went against why he became a rider (which was to save lives IIRC).