@rl_dane What wasn't usable about it for you? I just did a fresh install on my laptop the other day. After unchecking the two "delete everything every time" boxes, and checking the box to re-enable Firefox Sync (less comfortable with that every day, but in the short term I just need to be able to get to work), it just feels like Firefox but slightly less shit lol. Historically I also import the same BetterFox config I used to use on stock Firefox, but I kinda just stopped bothering with that at some point.
EDIT: Oh also I enable playing DRM protected content, same deal with regular ol' Firefox.