Huge +1 to this. Managed switching with hardware offload is the only thing standing between me and a fully open source* homelab.

I'm vaguely aware of some enterprise options. I want something quieter and reasonably power efficient. Price is no object within reason. I would pay low 4 figures for something equivalent to a Mikrotik CRS326, but with upstream kernel drivers and an X86 CPU.

* I don't run libreboot or anything, I'm sure there's a fair bit of closed blobs in my lab, but almost all my devices can boot any standard Linux boot image.