With the room rugs, if just kiss the surface, on pull back it lifts and holds the rug for about 2 feet! Pretty sure that means its getting all the crap! I used a G7 recently I tuned up for a friend, few inches it dropped it. I THINK?? the different beater, 4, not 2, there was less contact with mine,between brushing it could hold longer? Could feel mine beating, hers not so much. and it was in great shape.Mine does have the upgraded white fan, I think they were a match there?