Why not add my 2cents - I am getting older and a 14 hour long haul cripples me, and I get over tired from lack of sleep. The planes are always full these days, so economy is not nice at all. It would take me a day at least to recover.
Full service business class is vastly over priced, so I can only use that when I have ample FF points.
The alternative, which we have used and found very affordable, if you can book far enough in advance to get the cheapest rates, is Air Asia X. I just want the bed. I have my own media players(power is included by the way), and I can order simple food items as required, but most of the time I sleep and arrive with the ability to walk of the plane.
Thank goodness there is at least one Low cost long haul business product that I can access from my front door, but sadly only goes north, and not east.
Going to the US in September, and ended up buying Y+ on Qantas, as J products on "reliable" airlines were out of my resource league, but I dont think I will get much sleep even if I do get a little bit more recline..