27.0.1 NextcloudPi, specifically. Running on a Pi4 that's booting from a 1TB SSD. Currently using it for photo backup from my phone and sync point for Quillpad. I tried AIO on my main server, but it ran poorly on my admittedly older hardware. The Pi build seems to run well, so far.
When I was doing the reading, it suggested that the AIO was the successor of the Pi version, your experience doesn't support that. Would you suggest going for the Pi?
My main server is a HP Microserver gen 8 with a passively cooled Xeon (don't remember which atm), 16GB of RAM. By computer standards it's pretty old. (That generation was made from 2013 to 2015, iirc). I still tried the AIO docker container installed on Unraid. Beyond the difficulties with initial setup, it ran really poorly. Navigation through the Web app was sluggish. I also noticed that it took quite a bit of the available system resources, more than I had to spare with the other apps I was running.
So once I heard about the Pi build, I had to try. I had the Pi4 collecting dust anyway. And so far, it runs better. I found the setup wizard to be easier as well.
Note: I'm still new in my selfhosting journey. About a year now.