With the recent maiden commercial flight of the Chinese Comac C919, I do potentially see it as a threat to the duopoly of the 737 and A320.
I still prefer to fly with trusted brands, but I have been contemplating when I should consider flying with the C919. I would say if the fare is about 30% cheaper, that would be enough for me to choose the C919.
What do others think?
I'd fly it. They stole from the very best aircraft designers in the world.