No arguments from me.
I'd like to recommend a book I recently read.
Soviet Tragedy: A History of Socialism in Russia
Perhaps the best outline I've seen of why their system worked out the way it did, despite the noble intentions of many of its founders.
It shows pretty conclusively, IMHO, the Stalin was not an anomaly in the system, he was its logical expression.
I haven't read that one. I'll check it out.