Originally Posted by
UncleDude
As you are looking to fly AA TATL go for Madrid as you will have a 50/50 chance of NBC on the MAD 767 versus Guaranteed OLD Cradle on the LHR 777.
If you are paying J Fare and not an EVIP as others have suggested go for RJ via AMM.
Why on earth would the OP want to go to MAD on AA metal? That 50/50 chance of NGBC couldn't possibly be worth a stop in MIA (only MAD flight on AA metal). And calling the 777 business seat a cradle is confusing, as "cradle" was the specific term used by BA to describe their pre-lie-flat CW seats, AFAIK no other airline used the term.