Well, you were quite happy to push for Richard to consider the X range when the brush roll doesn't switch off. Depends on the kind of dust you're referring to whatever you pick up in that regard. I think I'll do a video test right now and see what the Panasonic and Sebo are like with rice.
Generally, I find the Sebo is okay for dust on hard floors - but give it the rice test and it can ping bits off - not all of the major heap but just slight bits of rice. The Panasonic has a wider mouth, edge to edge cleaning unlike Sebo's flywheel to the left hand side part and as you know, where the Sebo fights back is the front edges that pulls dust in due to its flat streamlined front plate.
At the back of my mind though, I'm trying to keep Richard's cost prices low. A second hand Sebo X1.1 or X4 will seldom be cheap and the Felix is a bit more expensive, even though it is better on hard floors with the brush roll on/off function.
In terms of the Panasonic - it isn't any worse than the Sebo for picking up dust - as you know where the Sebo fights back is with its wand release and hoister - but now the Panasonic MC UG522 has that design addition too with its quick draw tube and hose added together.
The Sebo would be a better bet though if Richard wants to swap his vacuums around plus the running costs would be cheaper on account of using the bigger capacity dust bags that are also usually cheaper to buy.
The Panasonic though has a 3 litre dust bag putting it directly against the 3.5 litre capacity bagged 100 watts more Felix.