Hmm - looks like it won't be the new cabin - it's a 4 class 77W. So 16:30 departure on AF "old" cabin or 17:50 departure on KLM on a 787-10. AMS is easier connection, AF lounge has better food (but KLM 52 has the lovely sleep cabins). 787 is a more pleasant experience and IFE screens are better. JFK T4 security is much better than T1. Not sure how lounges compare - I assume KLM uses the SkyClub at T4.
Seems like a coin-toss.
Originally Posted by
Fabo.sk
787 is a good bit better than the 777 all else being the same (it's quieter and the air pressure does help a bit), but if you can ensure the new cabin in the 777 I would go for that.
Can't help with crew or food on the transat. Intra-Europe AF blows KL out of the water.
AF 2E lounges are yet better than 2F (but that would be in place for your return anyway) and KL Schengen lounge is a joke.