I would never consider either of these guys "evil".
IMHO, Trump is a sociopath bereft of ideology. Certainly he does things that are evil in nature, but because he thinks/hopes these things will make him a winner, not because he has an evil core!
I see Biden as a mainstream politician with at least some good intent. I consider him a good candidate, but I am not excited about him. Then again, I think we need "calm and steady" and Biden fits!
But my point in saying that I am voting against Trump is to highlight the fact that I see this election much more as a means to get rid of Trump, and I would vote for any of the Democratic Presidential Primary candidates over him.
For me the upcoming election is a referendum on Trump. My enthusiasm is driven not by having Biden as my champion, but by removing Trump from a position where he represents/directs the USA!