Good review! I have the board and so far I'm satisfied. However, some negative points:

- No official 3200 MHz RAM support (even cheaper AB350 has).
- As mentioned above, still no dual BIOS/UEFI. Come on ASRock!
- I'm experiencing issues with front panel audio. Sometimes I get weird noise on high pitch sounds. I don't know if it's the MB or something else though. Still troubleshooting.

By the way, some X370 Gaming K4 have Niko PK618BA + PZ0903BK MOSFETs.