The Atheism of Communism is a deal killer for me.

In which direction? Soviet suppression of religion was IMO a Bad Thing, not because it cut down on organised religion in the Soviet Union but because it was such an ineffective way of cutting down on organised religion. People who thought they were God's Chosen Ones tended to revel in the kind of self-righteousness that state suppression fostered. A much more effective way of combatting superstition is to have an open society with a religious free market, in which everyone can see that their One's Chosen God is a fashion choice and not a fact of nature.

Peter