i have a blue ridge overland attic.
biggest waste of money ever. When its loaded up, it sags to the point you're rear view mirror is useless, but that's not what makes it stupid..... If you have rear seat passengers, they will get really annoyed unless they are super short, because it eats up all their head room (even when empty).
Don't listen to the instafakers.....these attics aren't worth it.