I've been using a previous gen system for almost 3 years: EPYC 7401P with a Gigabyte MZ31-AR0, 8x16GB of ECC, and a bunch of PCIe flash and some SATA rust. I love it; it's my favorite workstation in a long time.

For my new machine next year. I'm currently leaning towards ASRock Rack's ROMED8-2T, which is available for order but is not "in stock" at most places (e.g. provantage). It's PCIe 4.0, runs DDR4 at 3200 MHz, and has a reasonably long RAM QVL. I'll go with whatever the best value is for a CPU when I pull the trigger on the upgrade.