Well the best choice here is certainly EK flight 201/202 because it has the new seats, which are pretty nice (even though they are 2-3-2 configurated). Also, the food (and maybe also the service) are better than on EY. Last, EY's lounge are way below EK's, with the AUH one being ridiculously small; at JFK they use the Swiss lounge, again not on par with EK's.