3D for me. Since, well, even if I do still enjoy the deliciousness of 2D, I'm gonna admit that I'm slowly outgrowing my like for H-Material. It's like a drug, but I've grown tolerant.
1) the chicks are hotter and don't make stupid faces
2) awesome squirt scenes
3) can change their dubbed voice if it sucks
4) they will never leave you, unless you delete them.