Affordable MiniPC / SBC for self hosting? Will connect to 1x SSD and 2x HDD.

Something small and 2 or 4 GB RAM. Raspberry pi's compute power is good enough for me, I'm not doing anything too intensive.

Is raspberry pi 4 still the best answer?

I am a tinkerer and don't mind tinkering. I typically use Gentoo Linux as main OS. I also don't mind ARM or other architectures. I've been eyeing the RockPro64 as well.