Mr So Low:
"Is it by aircraft type or operator?" Now you're making me nervous. We're straying into legal territory.....
But I hear what you say about 7 miles out - a lot happening, hence the extra noise. It's hell out here. And hopefully (for the industry) those factors will reduce over the years. Let's just hope Airbus are working on that with their 600-seater.
Prepositions : I am the sort of person who hears the Currie Motors ad on the radio and shouts back. (They have a jingle which ends "Currie Motors - nice people to do business with.")
As a result, I've never been near them for a car.
However, I do understand why they have stuck with this massacre of English for 15 years. Somehow you can't easily sing "Currie Motors - nice people with whom to do business."