For me, flying in business or first class is not about the extra attentive service or the meals _ which are, let's face it, still airplane food _ or even about the endless supply of free booze (well, maybe a little about the endless supply of free booze).
It's about comfort, especially on long-haul flights. It's about being able to shift position, with the push of a button or two, from sitting upright to a much more comfortable lie-flat position. That's when my spine and posterior go "aaaah."
But airborne comfort comes at a cost. So I'm going to tell you how to fly flat for less than you might imagine.