Ubuntu – few applications, unstable: over time, some problems with the volume were, cured only reboot; there is no normal application Telegram (web client that the battery eats).
CalyxOS is subjectively more convenient, F-Droid and RuStore download by machine, F-Droid installs an update machine, RuStore downloads and asks for /e/OS RuStore to download forcibly. Also on both MicroG systems, but on /e/OS, SBPay bent and didn’t work, on CalyxOS - no problem. Similar to applications, for example, for renting scooters: on /e/OS some problems, on CalyxOS - no problems. There are fewer problems with CalyxOS.
With Sber, Rosselkhozbank and Unicredit, there are no problems there or there. Russian mail application does not work on any platform.
The only plus/e/OS is what is in GooglePlay, but not in RuStore, it is easier to put: AuroraStore on CalyxOS makes you go out and log in all the time to update the installed applications; on /e/OS, what is installed in your home store, including with Google PlayStore applications is updated without problems by automaton.
On New Year’s Eve, each of us can radically change our lives, we can only wish him luck.