I’d recommend iodéOS instead of /e/OS as the former is considered a bit more secure than the latter, see overview of Custom ROMs here (summarized from a well known German IT-Security Blog). You can also buy a FP5 with iodé preinstalled.

I use /e/OS on my OP7.

• Their tracker/ad blocker is great.
• Their app store has a rating about privacy/tracker for each apps.
• They implemented tor in the OS, and you can choose if you want to activate it and for which application.
• They have a mock location feature.
• I get monthly update, and it works smoothly.
• You do not need to use murena account to use the OS

For the drawbacks :

• They have an app store that can install both applications from the play store and from Fdroid, but it isn’t very convenient as you can’t add Fdroid repos, nor uninstall applications with it. (and I’m unable to use it to install applications from the play store for more than a month, I’ve installed the aurora store )
• Most of their system applications are open sources applications available from Fdroid but with a different icon and name.
• Their navigation application named “Maps” is a rebrand of magic earth.

It’s all I have in mind at this moment.

When I’ll change for a fairphone, before turning to /e/OS, I’ll probably try iodé OS. It seems they have similar privacy /anti-ad features but the OS might be less bloated and the system app are not rebranded, they keep their original name and icons.

I have a fairphone 5 running /e/os, and my previous phone was a galaxy S9+ running IodéOS.
Unfortunately i don’t have time to write a whole review for you, but if anyone have any specific questions about either i’d be happy to answer them when i get time.

My wife recently got a murena Teracube and we have rather mixed feelings about it so far, worst problem is very poor mobile network connectivity. E.g. when leaving WiFi range, it doesn’t autoconnect to mobile, or no connectivity after crossing the borders (I checked the bands, they are fine). But here I’m not sure if the problem is hard or software. Another annoying problem is that I can’t get owntracks run properly. On my Fairphone 4 (FF OS, so still Google Brand) I never had those issues.

Per their own releases, they includes October’s AOSP security patches.

This is pretty good, but still behind GrapheneOS in terms of security.

(I did a quick search, so I could be wrong)

Edit: Oct patches were included on a release from 1 week ago. I have no clue what their history is

/e/os is LineageOS + microG with an easy installer available or pre-installed purchase. The interface design is based on how iOS works, for example to move an icon on your phone long press one of the icons and wait till they all go wiggling and then drag the icon to where you want to have it.

I think /e/os is okay for folks who want a deGoogled phone that comes pre-installed.

In case anyone wants to try the /e/os easy installer on an old and supported phone, the /e/os easy install is really much more easy compared to plain LineageOS install.

I have a Fairphone 4 with preinstalled /e/OS and I can say I really like it. I really don’t miss the Google Apps, but if you would need any you could install most of them. Lastly they had a major server fuckup (many Murena services were unavailable, like Update and Drive) but that’s solved mostly now.