PL - AMS/CDG is a full service, sarnies plus drinkies. Skip the Heineken, go for the wine. I am fond of KL red, they drag it in from Kaap.

I've heard talks of KL limiting UK service but no direct evidence so far. if so, AF might be the better bet.

Lounge-wise, should you have access, CDG is million miles ahead of AMS both out and back.

on-board comfort points go to KL but you have to shell out for eco comfort.