Of the ones I've seen I don't have a worst. Just ones I like and ones I don't like as much. My favorite of those finished is definitely Kuuga (even with what I've seen of Agito--sorry folks, but I like Godai much more than Shoichi) and the one I don't like as much is, sorry Knight, Ryuki. Its pretty good/interesting and was the first Toku I ever watched with my girlfriend, but compared to Kuuga, Agito, and even Kabuto, its just not as good.