Every country that has ever implemented communism has been a catastrophic failure resulting in oppression, economic collapse, and (especially in the case of Russia and China) a deathtoll that makes Hitler look like a slacker. Of course, the best example of this has been Russia, but virtually every other communist country has backpeddled away from communism into a kind of defacto capitalist society. After the reforms that moved it away from communism, China has become a more business friendly environment than the supposedly capitalist Western nations.
This is really a non argument to me though. Communism has been tried many times and it has always ended in failure whereas capitalism has never been fully implemented (at least total laissez-faire capitalism). When America was at its most "capitalistic" during its founding, it enjoyed a level of prosperity/peace/growth that has never been matched by socialist/communist or our current crony capitalist/facistic United States.
In regards to the original question, communism is the total absence of freedom which is worse then our current pseudo-capitalistic semi-free United States. Capitalism even when it is poorly implemented (early days of the United States and in the present in the case of China) is still better than any form of communism/socialism.
** also, for anyone that states that communism has never been implemented properly either then tell me where Russia went wrong. They are the best example of that philosophy put into practice that one could ever hope to find. A "stateless" communist society is an impossibility unless we fundamentally changed human nature away from egoism to complete blind altruism (which I think has only been accomplished in the realm of science fiction i.e. the Borg collective). In other words, you would have to first turn humans into monsters in order for them to follow a monstrous idealogy like communism.