WINNER The Gigabyte X570 Aorus Xtreme
BEST MOTHERBOARD The Gigabyte X570 Aorus Xtreme is quite clearly a cut above the rest here, boasting premium features like a true 16-phase VRM design, onboard 10G Ethernet, and passive cooling for the PCH that does away with noise entirely. The VRM implementation and passive chipset cooling are things that no other X570 board has, so the Aorus Xtreme is entirely unique in this respect.
The MSI board is too pricey, while the ASUS motherboard lacks meaningful differentiation from the Hero (Wi-Fi). The ASRock board is a decent alternative if you're on a tighter budget, but it doesn't really compare in terms of usability and features. I'm not saying you shouldn't buy the ASUS ROG Crosshair VIII Formula or MSI MEG X570 Godlike though. The ASUS board will still serve you well if you want to try liquid-cooling your VRM and prize bells-and-whistles like the configurable OLED display. Similarly, the Godlike motherboard places a strong focus on aesthetics and will be a good fit for someone who can utilize its bundled 10G and M.2 expansion cards.
But if you're just looking for a solid board that will give you the most utility, there's no beating the overall proposition of the Gigabyte X570 Aorus Xtreme.