Just got back from an AF business class trip (777, CDG- LAX) Was an extremely comfortable/pleasant ride (I agree that it would have been hard to sleep in the non lie flat seat, but this was not an overnight flight) Was in the first row and so we got to see alot of what went on in first.
Frankly, for the extra miles or money is first class on such a flight really worth it?
Our food/wine was good enough and I don't need great food while flying. Any more legroom or space was not needed.