I agree wholeheartedly with Roger. I have tested DeepL on a difficult philosophical article and on the text of a children’s book. (E->F in both cases). I find DeepL absolutely tremendous. It doesn’t think, of course, but that’s not really the point. Its output is way superior to Google’s or Bing’s and even to the translation of the published children’s book.
I am a professional translator (retired from the UN after a little over a quarter-century in the salt mines :).