Oh come on. China is an authoritarian regime with greed bolted on, that is already causing great disillusionment among its populace as it fails to deliver endless economic rise. It’s also an environmental disaster despite its admirable adoption of green technology. And the Soviet Union was a dismal failure as an experiment in human wellbeing. The best socialist model we have is the Nordic countries which use their higher taxes to fund a much more secure society with the basic rights to education, health and economic security assured. They consistently rank at the top of measures of happiness.