As part of a business class award trip from Australia to the US I need to book flights from LAX to NYC and NYC to SFO. On the dates I need there is a choice of either Business Class to and from JFK (I assume PS service from the seat maps) or First Class to and from EWR (which I understand can be booked as part of an international business award). I would like advice as to which is the best choice including airport convenience. I have been through JFK before but not EWR and would be planning to travel into and out of New York by train.