KLIA2 will never compare to the major Asian airports – but then, it's not supposed to.
T4 isn't the worst airport terminal in the world, but it's far from the best.
Everything else in the emirate is world-leading – surely the airport will be?
It's slick and modern, with stunning design, plenty of space and air. This is not an airport you should regret visiting.
Haneda's hallmark is "food, glorious food" but plane nerds are in for a treat too.