LHR-JFK in J on BA or AA, on AA I get miles.
I am going to fly LHR-JFK in the coming months in J. I have flown BA J a number of times but I have never had a ride on the new product.
Do I fly on BA across the pond in J and miss out on the miles or go AA and get the miles. Is there much difference between the two products in J, especially to warrant the loss of miles?