Proton services generally are not bad, but I could never use Proton Drive for anything else than mid to long term backups, because they don’t have it integrated with Linux. I am not angry though, it is what it is and I am only in the niche (even-though Linux is the best OS for privacy). Ever since I have setup my Truenas (and Immich) I find myself caring even less about not being able to use Proton drive 😀 That said, once they have integration I want to use it for a few files.
I have experience with both Ente and Immich and I can say they are both excellent. I like Ente a little bit more, but Immich is imho better for selfhosting (both are easy to self host). What I like about Immich in that regard is that it keeps photos organized as files too, they can be categorized in folders (like year > month > day and its customizable). I just want to have an option to have access to the files directly on the filesystem and if (big if) Immich dies, I still have my photos accessible and organized in directories without me needing to do anything. Ente uses s3 storage system.
It feels quite equal now that immich is stable. I was actually waiting for that, because I knew the updates before the stable release were sometimes painful and I didn’t want to do that on my production env. 😀