The Aoostar WTR max is pretty beefy, supports 5 nvme and 6 hard drives, and up to 128GB of ECC ram. But itβs $700 bare bones, much more than these devices in the article.
Aoostar WTR series is one change away from being the PERFECT home server/nas. Passing the storage controller IOMMU to a VM is finicky at best. Still better than the vast majority of devices that don't allow it at all. But if they do that, I'm in homelab heaven. Unfortunately, the current iteration cannot due to a hardware limitation in the AMD chipset they're using.
I have the pro. I'm not sure if the Max will do passthrough but a quick google seems to indicate that it won't. (There's a discussion on the proxmox forum)
