I've tried them all and I've ended up with Umbrel on an old Dell i7 from eBay. With a nvme drive on a pcie card it's under $200 equivalent in GBP. Running on Ubuntu I installed Umbrel directly on the nvme (can't boot from it directly).

I ran a Raspiblitz for about 2 years until a couple of weeks ago, but it was struggling to stay up reliably. Sad to let it go.