We have a Miele Vacuum cleaner in HK, if the disposable bags irritate you, you can order a calico bag that you can empty and reuse, saving quite a bit of money.
One word of warning though, you will still need to replace the internal motor filter every six months, or so, or you will likely trigger the thermal cut out, or worse, overheat the motor, triggering the thermal cutout, seize the motor/blow the starting capacitor, glaze the commutator with contamination that gets between it and the carbon brushes and ruin the shaft bearings.
You can buy the filters separately, I get ours in Australia, but assume that Miele HK do it here via their spare parts dept.