Banana Pi R3 or R64 (OpenWRT). Some DIY assembly required but it will probably last you over a decade.
My favorite part about these is that they are unbrickable. There is no bootloader to permanently corrupt as the firmware that loads the flash chip is in mask memory and the firmware you load from OpenWRT is the bootloader + firmware. So even if the flash chip dies you can use the other flash chip on the board or with soldering skills replace it and re-flash it.
Not really. Even TrueNAS Core (ZFS) highly recommends ECC memory to mitigate this possibility from occurring. After reading more about filesystems in general and when money allowed, I took this advice as gospel when upgrading my server from junk I found laying around to a proper Supermicro ATX server mobo.
The difference I think is that BRTFS is more vulnerable to becoming unmountable whereas other filesystems have a better chance of still being mountable but contain missing or corrupted data. The latter usually being preferable.
For desktop use some people don’t recommend ZFS as if the right memory corruption conditions are met, it can eat your data as well. It’s why Linus Torvalds goes on a rant every now and then about how bullshit it is that Intel normalized paywalling ECC memory to servers only.
I disagree and think the benefits of ZFS on a desktop without ECC outweigh a rare possibility that can be mitigated with backups.