Good question. But also a personal one as it is different for each and every one of you. Everyone has a different set of wishes and demands. Even though both Wise and Revolut are excellent in paying in the local currency of the country you are in, each offers slightly different added benefits.
* Wise offers more local bank accounts
* Revolut offers extras like saving via rounding up, travel insurance and airport lounge access.
For me, they complement each other perfectly. Sometimes I use the one more and other times the other, but both get used a lot on all my trips.