Donald Trump or Hillary Clinton?
The actions of anyone are measured by the degree of conscious harm and hurt are done as a result. Hillary Clinton operates with at least some ethical constraints and while she has severe demerits in the harm department she would have been a marginally better choice than Trump.
Trump is perhaps the only public figure we have had who is consciously evil and celebrates that fact. By both obvious actions and almost daily expressions, the conscious method of Donald Trump has been to inflict harm and hurt. A perpetrator has no way to measure the effects of what they do. This is the quantum reality of a connected world. The decision to elect Trump was a cynical gamble on promises that have one by one proved hurtful and harmful.
So the choice is easy. But what about unintended consequences? Trump might achieve good (the reduction of hurt and harm) but it is a long shot. If for example he should claim to have averted a nuclear war, it was he in the first place whose rhetoric ratcheted up the fever-pitch war prospect.
Evil has many ways of operating.
Because Trump manifests every feature that has described dictators over time, the answer is obvious. The unintended consequences of a bad Hillary Clinton presidency would likely be minuscule compared to the risk we run because nobody has yet dared to pull the plug on Trump’s maniacal and conscious maneuvers.