Rakza XX vs Tenergy 19

[Faker]

I wanna use these rubbers on my blade (which ı posted on the thread "SDC HANDMADE BLADES" for asking composition). But ı wanna know which one should I use on my FH? My Rakza XX's thickness is max and Tenergy 19's is 1.9mm. For the fiber side which one should I use? I love playing fast with topspins and slaps.