Travel experts film their experiences in all FOUR cabins on a Japan Airlines flight from Tokyo to NYC, from economy to a £6k first-class berth (and one seat is declared ‘best in the world’)

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 ECONOMY … Delicious.’ 
Any downsides? Japan Airlines was found wanting here in … left – to test out Japan Airlines’; business class.
And he … #39;.
He said: ‘Japan Airlines’; new first class has …