Hi @Truan, Welcome to the Zwift Forums!
Fernanda here, part of the support specialist team at Zwift.
It’s great to know that you have two options for enjoying as a cadence sensor, I must let you know that both options are amazing, however, for pairing on Zwift game, it will be better for you to use the Runn NPE to avoid any issues when pairing, you can check the compatible devices for cadence in this Public article.
I also will advise you to check this thread in the Forums, regarding the Garmin HRM Pro as a cadence sensor.
Let us know how it goes for you!