Business is just fine for me if I am going any more than 6 hours. No need for first... that's a waste of money IMHO.
Though I flew first class twice from Tokyo to Chicago (United) and to be honest I sleep better in business beds than in the lay down first class beds (United) because I am too tall to lay totally flat, I can't put my legs straight. :-( In Business I can not be 100% flat but I can stretch out and get some good sleep.
Due to where I go, United is the airline I try to fly.
