Despite most items from Amazon US skyrocketing upwards in price recently, this ASUS AM4 TUF Gaming X570-Plus ATX Motherboard is still a good deal relative to all local stores (in-stock sellers typically want $399 to $429 here + delivery for the Wi-Fi variant). Note this does not have inbuilt 802.11ac unlike the Wi-Fi version but is identical in all other aspects
The motherboard has been reviewed positively, has a good VRM for this price tier of X570 board and can handle CPUs like the 3900X without problems. The upcoming MSi X570 Tomahawk Max looks even better but is likely to come at a higher price point (especially with the lower AUD to USD exchange rate these days).
Main features from ASUS website
*Enhanced Power Solution: 12+2 Dr. MOS power stages, 6-layer PCB, ProCool sockets, military-grade TUF components, and Digi+ VRM for maximum durability
*Comprehensive Cooling: Active chipset heatsink, VRM heatsink, M.2 heatsink, hybrid fan headers and Fan Xpert 4
*Next-Gen Connectivity: Dual PCIe 4.0 M.2, USB 3.2 Gen 2 ports, exclusive Realtek® L8200A Gigabit Ethernet, TUF LANGuard and TurboLAN technology
*Realtek S1200A Codec: Pristine audio quality with unprecedented 108dB signal-to-noise ratio for stereo line-out and 103dB SNR for line-in
*Aura Sync RGB: Synchronize LED lighting with a vast portfolio of compatible PC gear, including addressable RGB strips
In stock on May 17, 2020.