What are you looking for? Action? Thinker? Ecchi/moe?

I would have to say, that Boku no Pico will always fill your needs.

any of the above (though I'm not sure what moe is) most important would be the characters, that's all it really takes for a good manga, well that and a hint of creativity

The undead - you seem to like the darker side, but both are pretty good, have you tried Full metal alchemist? seems right up your ally