Hi people!!!!

I have notions about many languages, But I'd like to know which language do you recommend me.

Because of is a 3Dgame and must be as efficient as possible I think the language matters.

I'm between c++ and c#

I think c++ is as powerful as dificult and c# it's easyer

And the important points are:

The game will run under windows
Using OPengl
Must be fast

Any suggestion?