Panasonic MC-E40 Series
The original agitator for the MC-E40s was a helical beater bar and arranged opposite it by 180°, was a bristle brush. The edge brushes were soft 'fringed circles'.
They redesigned it to be the more modern sparsely populated, twin helix brush, and broken beater bars. The edge brushes on this one are similar to the rest of the agitator - sparse clumps. I had this one fitted when the original wore down on the belt pulley area, a couple of years after buying the machine.
I got the impression from that particular thread, that the same agitator was used in both the old slower machine, as well as the new quicker one. The comments went along the lines of: the modern machine was skimming over the surface of the carpet pile, whereas the slower machine correctly lifted the pile.
