Obviously the Microsoft one 
Xbox for life.
https://forum.xboxera.com/t/bing-ot/
As for a “prompt expert “? Prompt expert is just elitest bs when people proclaim themselves AI experts. AI is for the people… everyone should use this moment of technology to make thier ideas come to life.
The people most scared of AI, “The AI haters” , are the ones that don’t want us regular people having all this creative power.
I personally think the AI key is being creative and not being afraid to experiment. To me the “idea” is the most important thing. Once I think of a cool idea then my competitiveness kicks in and I want to make sure I generate enough images until I get it as good as possible because my biggest fear is coming up with a great idea then having someone come along and do it better.