It's less about 2D versus 3D and more about whether you prefer an illustrated or anime-style look versus a realistic one, right?
When it comes to photorealistic 3D games, there's really only *Love and Deepspace* at the moment, so there aren't many options. Even the photorealistic games set to be released in the future tend to look quite similar, so I'm hoping we'll see more variety in the graphics. I was truly impressed when I first saw *Toraware no Palma*, so I'd love to see a new series like that come out.