I'm attempting to book an award from either NYC or IAD to DEL. I'd like to go first class, but may be forced to go business class. These are the airlines that seem to have availability:

Continental
Lufthansa
Austrian
Asiana
Turkish

How would you rank their BC product? Who's the best, who's the worse. I know the actual plane being used affects the quality, but I don't have that information just yet.

Thanks!