Been to both this year
Paris, sprawling, city in decline resting on upperclass values and ideals, wonderful buildings to look at, metro and RER a mess and troublesome, Museums Louvre scrum to see the Mona so see and then enjoy the rest peacefully Montmarte wonderful and warm and left wing the rest I found irksomely cold and unfriendly
Amsterdam, great building better walking city, intriguing, friendly people, a town not a city, avoid the smokers area or go experience and review, museums great,more of a vibe and energy to the place, transport system excellent,
Both expensive.
Not sure if under the veneer Paris is a world class city.
For the day Amsterdam, as you will see more and it is full of bikes and thus photo opps.