I prefer never to use the ! operator if I can possibly avoid it. It is much easier for me to miss when skimming through code and my brain doesn't parse it autmoatically like it does "not".
For much the same reason I always prefer "or" to "||" and "and" to "&&". My brain already knows how to parse these English words and I don't need to teach it new tricks.
helgi AT decode DOT is
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