Originally Posted by
DLNYC
Being NYC-based, I'd say DL makes a lot more sense than FB (DL elites can upgrade into AF Affaires from Premium Voyageur).
The OP could continue with the AF product he knows while avoiding most AF fuel surcharges if the Delta SkyMiles redemptions originate in the U.S. That's a savings of about $100/ticket on a JFK-LAX-JFK redemption.