10 headlines, 5 angles

Headline variants for an article, ad or page, using different angles to test.

Write 10 headlines for {{WHAT: article / ad / landing page}} about {{TOPIC}}, aimed at {{AUDIENCE}}.

Use 5 angles, 2 headlines each:
1. Specific result with a number
2. Curiosity / surprising fact
3. Pain or mistake to avoid
4. How-to
5. Contrarian

Under {{CHARACTERS: e.g. 60}} characters each. No clickbait that the content cannot deliver. Mark your top 2 and say why.