I use a Fairphone 4 running Murena's e/os. The experience has been pretty good so far. I haven't needed to repair the phone yet but it's nice to know I have the option. The os doesn't have any quirks I can't live with. I like their app store, it gives every app a privacy score based on what logging it has and permissions it uses.
I have just bought myself a second hand fairphone 4. Not on eos, I might switch but Google pay contactless is important to me and I don't believe it works on custom ROMs