I believe that Communism, as a real world political system, will not make everyone happy, and will cause severe economic strain. I believe that Socialism COULD work if you created a society where everyone was accustomed to each other and could improve technology. MY version of a Utopia would be a combination of Socialism, Utilitarianism, Democracy, and a Tyranny.
I would be Supreme Emperor WITH Irrefutable Veto and Infinite Votes. (and unempeachable)
Under me would be a Democracy like the U.S. one without governors (as I would rule a small advanced nation. This would require a Hive City system)
And everyone would recieve basic food, water, medical attention, News Radio, but would have to work to earn privileges (possibly through time or efficiency measurement) and could get any jobthey wanted and were qualified for. Privileges would be stuff like TV, game stations, food besides vat grown proteins and yeasts. Now all I need is to convince people I am not EVIL COMMUNIST MAN!!!