Thermal Paste for 5800X3D?

I'm about to mount a 5800X3D. Cooling is a 360 AIO (Z73).

I've got two unopened syringes of thermal paste sitting here:
1) Kingpin KPX
2) Noctua NT-H2

What is your opinion? Which do you think I should use? Which have you had good experiences or bad experiences with?

ETA - This is a CPU swap and a remount of the current cooler so using the pre-applied paste isn't an option.
The difference between top tier paste and toothpaste is 10 degrees. Don't overthink it.
 
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