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.
Mine is running on one of these https://www.amazon.com/dp/B0BYZC4SMW which exceeds your specs by quite a bit. They have substantially cheaper models closer to your range, I’ll bet you can find something.
I haven’t had mine for very long but so far it’s been A+.