I toured Air India's new A350 business class after flying its old 777 product for 13 hours. The difference is night and day.

• Air India is rebuilding its reputation after falling into disarray under state ownership.
• The carrier recently started flying its brand new Airbus A350 with an improved business class.
• I found the cabin a major upgrade after flying Air India's old legacy business class for 13 hours. 

Air India is completely rebranding after years of decline — and it's finally giving business-class travelers something to look forward to.