Do they block ads though? I am now only using Firefox because I can install Ublock origin and that works out for me.

uBO lite blocks between most and all of the ads, at least on the sites I browse. I honestly didn't notice a difference switching over.

I'm actually more curious to hear what sites it doesn't do a good job on.

ublock origin lite is blocking a bunch of stuff for me, and things are unbearable when I turn it off.

For many sites, especially news sites, I toggle javascript off. It's reasonably easy to do per site in chrome (click left of location bar and "site settings"). I don't know if there is an easy way to do this per site in firefox.

So far I've stuck with chrome for a few reasons:

- Mozilla doesn't implement desktop PWA and has cancelled the project. I use this. - Mozilla was using about twice as much memory as chrome. (I need to revisit this, Chrome seems to have gotten fatter.) - Safari is a royal pain to write your own extensions (last I checked you need to create an application and bundle the extension into it). - I like the multiple profiles in Chrome to sandbox things like my google login. There may be a firefox equivalent, however.