Honestly stick to Firefox. Brave is secure, yes it blocks ads, but how much more secure is it when pitted against other chromium based browsers. They all have the same core, its not exactly apples and oranges here. The difference, chrome sends data to google and brave, well, they have their own servers. The whole thing with BAT tokens means brave has its own telemetry and they need to monitor user's actions. Its explicitly stated in their privacy policy that they don't send our IPs to their servers, but they need some kind of ID for the reward system to work, innit? How can they reward their users with BAT if none of this information is passed on to their servers. If not they wouldn't be able to match user's interests with tailored ads. We never know what data they have of us. Brave is not definitely a holy grail for privacy, because at this point its just like using a chromium based browser with a built in ad blocker.
If you're using windows and want a chromium based browser use Edge instead. Since it is easy on your RAM compared to others and is only going to improve from here on, in terms of performance, that is! But if you value privacy you are better off with Firefox with a few privacy related addons.