Raspbian, or raspberry pi os? The latter is much closer to debian AFAIK, there is a 64-bit version/etc. But if your using it for server tasks, your probably be

Raspbian, or raspberry pi os? The latter is much closer to debian AFAIK, there is a 64-bit version/etc. But if your using it for server tasks, your probably better off actually running Debian. Although if your looking for something that is closer to a rolling release, you could just pick one of the distro's that have a release policy that strikes your fancy WRT how they roll out new packages/etc. Most distro's have rpi specific images, or you just install their generic arm64 images on top of something like the PFTF firmware. Put another way, raspberry pi os, has a fairly dated kernel/etc but works well with all the hardware on the machine for desktop purposes. If your using it as a server, its not a good choice because they frequently don't have useful things turned on (various filesystems, networking options, RAID levels, etc). The core storage/networking/cpu/etc type of things have been working quite well in mainline/etc for a couple years now, so that has trickled down into all these distros.