Quote - ...Be advised that these alternative render engines have another major drawback if throughput is an issue. They are slow. Very slow. As with most things in the world there is a tradeoff between speed and quality. 

I don't have TIME for these alternatives. If you do, then be prepared to put the effort in that ArtBee and others are warning you of, and be willing to wait MUCH longer for the results.

TIME is why I chose Octane - unbelievably fast - but you pay for it (licenses + hardware).