i also like them, especially how well he documents his findings and their implications.

Before anyone dismisses one of his tested databases, I'd however like caution against trusting his work fully at this point. Some of the documents are 5+ years old, thats a lot of time for the database developers to resolve issues.

thankfully, the tests are all replicable, so if you're evaluating cassandra for example, please repeat his tests before dismissing the database.