I don't think they are inherently incompatible views -- likely a broad "anarchy" could develop in many different directions and likely some of those we can't envision. I'm more concerned with the "how we get there" piece of the disagreement than "what thing will look like once we are there"
I think the incompatibility arises from how each ideology defines property. Canarchy advocates for extremely strong property rights. I'm not to sure about Sanarchy, it seems that they vary from weak property rights to no property rights. Nonetheless, this has the effect of completely changing how each society will function. One is where control is defined by 'capital' and the other is based somewhat on 'public opinion'. If I own all the capital then I can do whatever I want with it. Compared with; if I misuse my capital, others can take it from me despite having no prior 'right' to it.
Well, Marx's vision of the final stage of Communism was essentially anarchist, when the State withers away. But the dictatorship of the proletariat has always been a bit of a sticking point (and was the reason anarchists broke from Marxism in the first place). Honestly, i think Marx was a much better critic of Industrial Capitalism (perhaps the best) than a political visionary.
I largely agree. Correct me if I'm wrong, but Marx only proposed the Vanguard towards the later end of his life. He proposed it as a method to implement Communism. I view this a distinct idea separate from everything else Marx contributed. Further I view Marxism as two separate subjects, the economics and the 'worship of commune'. Its unfortunate that there is a lot of misinformation about Marxism.
I do think that he has contributed some good ideas to economics. Communal ownership of the "means of production" does put an interesting perspective upon property rights. But he didn't like markets ? I'm not to sure about this. I think "fair markets" are one of the best ways to exchange economic information.
I agree with his "Theory of labor value". But sometimes exploitation is apart of life. For example take a group of people. They all have a share in a communal resource. One comes up with an idea to do something productive with the resource. Consequently they receive a larger share of the profit, despite everyone putting in equal effort. That is fair to me, because if that idea didn't occur in the first place there would be no profit to argue over. Then again that might not be exploitation.