We use wkhtmltopdf on AWS Lambda and have had zero issues in production for the last ~2 years. We're generating internal owned documents (invoices, letters, paged forms, etc) so I wouldn't necessarily trust it with untested input HTML but it really has been bulletproof for our use-case.
At some point we'll likely move to chrome/puppeteer but in most of our tests the templates required modifications to mimic the existing PDFs so it's something we've been putting off.
At some point we'll likely move to chrome/puppeteer but in most of our tests the templates required modifications to mimic the existing PDFs so it's something we've been putting off.