(I posted this last year, but it's worth repeating): Blackstone was the leading late 18th century commentator on English law, and highly influential in the colonies, and this is what he had to say about why the English common law was better than the Continental civil law:

The English law is less embarrassed with inconsistent resolutions and doubtful questions, than any other known system of the same extent and the same duration. I may instance in the civil law: the text whereof, as collected by Justinian and his agents, is extremely voluminous and diffuse; but the idle comments, obscure glosses, and jarring interpretations grafted thereupon by the learned jurists, are literally without number. And these glosses, which are mere private opinions of scholastic doctors (and not, like our books of reports, judicial determinations of the court) are all of authority sufficient to be vouched and relied on; which must needs breed great distraction and confusion in their tribunals.