C++ 3D

I am using C++, and moving on to doing 3D things with it. I've some good experience with Java3D's API.

My question: OpenGL / DirectX / ???someothersuggesteions???

Leaning more so to OpenGL. I've heard a bit about Ogre3D too.

>>10
With shaders, you can get a lot of retro style effects without sacrificing quality.
You can do them without shaders,  without sacrificing portability.