I spent 28 hours in Japan Airlines' business class. It wasn't the best I've tried, but I don't regret upgrading.

The author spent 28 hours in Japan Airlines' business class during a trip to Tokyo, noting a comfortable seat and good meals but criticizing the lack of privacy in aisle seats. The journey involved a convoluted route from Marseille, France, via London and Helsinki, with business-class upgrades costing approximately $3,366 per person. The experience included access to Finnair and JAL lounges, though the 2-3-2 seat layout was deemed less ideal for couples.