FunkyKit posted a review on the ROG Zenith Extreme vs ASRock X399 Taichi
A quote from the article:
It's an epic battle between two of the most awesome X399 motherboards on the market. the Asus ROG Zenith Extreme and the ASRock X399 Taichi. We put these two motherboards to the test to find out which one is the real winner.ROG Zenith Extreme vs ASRock X399 Taichi @ FunkyKit