More vendor lock-in. I keep my passwords in bitwarden, which has extensions for both firefox and chrome

I use lastpass which works well on my phone too.

Regarding speed: Firefox will soon switch to a new rendering engine, WebRender. It's at least as fast as Chrome's. Then Chrome's speed advantage should disappear.

Firefox has its own service to do that and it works well. I don't know if you can migrate your passwords easily though.

Did that years ago when I switched back when Quantum came back; Firefox still has the good old venerable "import passwords from another browser" functionality. You just need to have your passwords sync'd to a local install of Chrome and Firefox can read them all and sync them with FF Sync (which does not force you to use Mozilla servers, btw; you may host your own server for max privacy).

It's not just their service. You can run self-hosted service for sync [0] and fully control it. From privacy point of view that's far more interesting than any other solutions I've seen.

[0]: https://mozilla-services.readthedocs.io/en/latest/howtos/run...

I've been doing this for a while but the part I haven't managed to solve is that using your own sync server on Firefox for ios seems to require you to also run your own Firefox accounts server - which is much more painful to set up. Is there a similar easy guide for setting that up?

Try this one: https://mozilla-services.readthedocs.io/en/latest/howtos/run... It's not as detailed as for sync, but has all the links to very detailed guides (even for a docker-based one). Hopefully it helps.

upd: typo

The way I have switched password managers is to run both for awhile. Overtime you move the ones you need. Eventually if you leave a couple behind you can always reset them in the new browser/manager. It's not as big of a pain as it looks going in.

Sure it does. I keep my passwords synchronized with a Firefox account through my Windows, Linux and Android devices. Works like a charm. I won't trust google to keep them.

That is the second most important thing why I'm using Firefox, I sync my passwords via my own instance of the sync server https://jeena.net/firefox-sync-15. I don't even trust Mozilla not to do something stupid with my passwords (by accident) and Firefox was always the only browser which allowed to use your own sync solution.