When flying which airline do you prefer to use?

Usually boils down to what is the best connection to wherever I'm going. But given a choice, I have always had a soft spot for Delta. Goes back to when I was in uniform, flying standby at a severely reduced fare. All the cheaper sections were full so they put me in first class along with off-duty stewardesses on their way to their next assignment and the champagne was flowing. Best flight ever!