...I like the Kiva theme too. Admittedly, you'd have a hard time finding a Heisei Rider theme I dislike is maybe Kuuga and the second Hibiki theme. (Least favorite overall is the Black theme. Poor Tetsuo Kurata even knew at the time he couldn't sing and begged them to use something else for the theme song.)

Mind you, Kiva's my third favorite Rider series (after Ryuki and OOO, not counting Gaim since it isn't finished yet) so I'm already a bit out of the ordinary on my opinion on Kiva...