Switched from Firefox to Brave in the last year across devices and not looking back (though I do miss containers!).
Blocking ads and trackers by default is pretty much essential in 2019.
The myth about ad replacement doesn't seem to want to die though!
There is no ad replacement, though the roadmap says at some time in the future publishers who opt-in will have the option to have their ad-slots filled by Brave's privacy-respecting approach.
For now I think the only ad trials running are pop-up notifications if users opt-in, and that's only in a few markets at this stage.
Not something I plan to opt-in to, but looking forward to the Github / Reddit / Twitter tipping and integrated crypto wallet.
That's all rolling through in the next few months.