[SideswipePrime]

Kiva: For the reasons Sentai said.

Den-O: It's sense of humor is pretty nuts, and it is a bit episodic, but there are other things going on to keep you invested (Like what happened to Ryoutaro's sister, among other things. However I would be saying MAJOR spoilers if I went any further.) Character-wise, The Imagin are the standout characters each of them being energetic and generally fun to watch. Zeronos and Deneb are an awesome duo. Music is fairly good as well, not Gaim good, but still good.