Both of them are very well documented with sources and explanations in the comments. You could pick and choose what you need and understand to create your own. Speaking from experience, using these prefs without knowing what they do might cause you a headache down the road when something breaks.

Betterfox should be the one with least breakage.

This is the 2nd or 3rd time I’m downgrading Zen versions due to a bug in the stable version

They haven’t released a stable yet and are clearly labelled as beta releases. Maybe there’s a hint why it’s unstable.

When it comes to personal privacy, you shouldn’t use anything you didn’t vet and compile yourself. And yet, privacy “enthusiasts” always expect someone else to do the hard thing for them. With so much “support” for opensource, here we are, with so little options.

The company will always protect itself and Mozilla is no different. They are doing great work with the browser but their management is a different story. These lazy kneejerk reactions are typical of who contribute the least are always the loudest.

It means less coming from a youtuber (both in these instance), who do things for enragement/appeasement and ultimately for money.

so it’s just wants to go where it was made and swim with the dolphins.