I received the Stratos upright a little over a month ago and have had enough time using it that I feel comfortable writing a review. So far...this thing is a powerhouse! It was pulling from my low nap carpet right after running a much more expensive vaccuum over it (hint: it starts with Rain and ends with Bow). The beater bar makes the carpet look renewed and doesn't hurt the hardwood floors. Best of all, in a house with three women and numerous uses, the bar still has zero hair wrapped or tangled in it. To this point, it functions exactly as advertised and I couldn't be happier!