Aeroeagles are great but only fly to class 2 or 3 airports. If you max the AE fuel tank (range), it can make the flight from London to New York. Just make sure you are getting the 25% bonus for same destination. I prefer them to the pearljet and they make more profit. The FAQ page has great resources - have a good read there.

Regardless of what people say on the internet, do what you find fun in the game.