I primarily use Alacritty. I spend quite a lot of time running things that produce ludicrous amounts of output (eg. compiling Android from source). Out of 10 or so terminal emulators I've tested earlier this year, it was the only one that didn't use 100% CPU displaying all that output, staying in the low single digits.
I'd prefer to use Wezterm because I like its lua configuration system and the builtin pane splitting, but with my workload, I still run into issues where its CPU usage shoots to 100% and becomes non-responsive for a while. (That said, it's already a lot better than before. I try to report any issues I can reliably reproduce and Wez has been wonderful about fixing them.)
For the most part, these distros all require that packages are built from source vs. repackaging prebuilt binaries. While Brave is open source, if you compile it yourself, you'll be missing tons of API keys for accessing Brave's services: https://github.com/brave/brave-browser/wiki/Build-configuration. While I suspect most folks wouldn't care if eg. the cryptocurrency things stopped working, other things that break include Brave Sync and the downloading of the adblocker filter lists.
Brave currently does not provide a way for 3rd parties to generate API keys to access these services: https://community.brave.com/t/does-brave-allow-the-distribution-of-self-compiled-or-distro-compiled-binaries/457833. Outside of reverse engineering their prebuilt binaries to extract the API keys, you're pretty much out of luck (if you care about these features working).
For websites that only work in Chromium, I've switched to just using plain old Chromium from Fedora's repos. Being able to build the browser from source without losing features is pretty important to me (eg. I rebuild Fedora's Chromium with the patches for enabling hardware video decoding on Wayland).