unique edge cleaning brushes and suction vents actually wor
I'd say yes. Even without the vent holes, the brush roll seemed to always do well edge to edge.
One aspect I forgot to mention in another old thread is that the guards actually keep the brushes from bending outwards in long term ownership compared to having them open. They weren't just a safety deterrent.
Also Alex, you've more or less got the Miele version there in front of you - the Powerhouse range was only available in the U.S under the Miele badge and came with additional headlight and variable suction control dial. Still retained the brush roll on/off selector.
Personally I think Panasonic did a wrong thing in stopping the brush roll on/off function on their current uprights.