If you want fap material, go for the RS. If you want weirdness, go for the series.
I mean, don´t misunderstand. I loved the series. Kino is a cool character, the idea of a talking motorrad is pretty rad, and the stories in each episode can really get you thinking (specially the Country of Peace). But there is a sense of weirdness and mystery all throughout the series that will probably make your brain shut off as if you were taking some kind of relaxing drug.
At least, that´s what happened to me the first time I watched it. I probably need to rewatch it.