The only thing in the fine print on mine was that if you vacuum over area rugs, or delicate carpets (I guess berber could be called delicate???) is to turn off the brush so it does not spin. It says to do that so the rug will not become tangled around the spinning brush. Only time I have to worry about that is the fringe on the area rug in the dining room.
Ummmm.... It does adjust. It adjusts itself according to the height of the carpet. When I do the pile carpet, the brush sits higher in the vacuum. When I come in here in the office and do the berber that's in here, it goes down lower. It's not pulled anything off my berber, but it's not one of the big, puffy kind. It's more like the berber you find in office buildings....flatter is the only way I know to describe it. Also, the bristles on the spinning brush are softer than any other vacuum I've ever used. No matter what kind of vacuum you have, if it has a spinning brush you will have to clean long hair (or threads) out sometime. This is the first one that the bristles don't cut my fingers. They made the bristles softer so it won't pull fibers out of rugs.
We all have our personal tastes. And I'm glad you have a vacuum you like. Personally, I love my Dyson. It works well, and was well worth the money, IMO.
Sharon