[Handycam]

Perhaps the dialog default should be "page source", as in Safari, instead of defaulting to "web archive"?

I don't understand your comment, though. Saving as "plain source" does not get you a PDF. For a PDF, you just hold down the option key and choose "save as PDF" -- this completely bypasses the choice of web archive/html and only saves the "full and glorious page" as a PDF.