Comment by bjackman

I would recommend x86.

Ok that's mostly a joke, I'm just not up to date on what platforms exist these days that are done properly. Back in my day the Texas Instruments platforms (BeagleBoard) were decent. I think there are probably Rockchip-based SBCs today (Pine64 maybe?) that add up to something sensible but I dunno.

The thing with the boot chain is that e.g. the Pi has a proprietary bootloader that runs via the GPU. You cannot just load a normal distro onto the storage it needs to be a special build that matches the requirements of this proprietary bootloader. If your distro doesn't provide a build like that, well, hopefully you're OK with changing distro or ready to invest many hours getting your preferred distro working.

(Why only "mostly joking?" I recently repurposed an old ThinkPad to use as a home server and it's fucking great. Idles under 4W, dramatically more powerful than a Pi5, has proper UEFI and proper ACPI and all the drivers work properly, including the GPU. Would cost about the same on eBay as a Pi. Only remaining reason I can see for an Arm board is if you're specifically interested in Arm or have very specific space constraints).