Just some slight input on the Miele discussion that's developed...

To summarize "Miele" with an S2 series machine is a little skewed. A Miele S2 is a machine that's built to a price, not a standard. As such, it has a ridiculously short cord and short hose, a smaller, less powerful 1200w Vortex motor with little sound insulation, as well as cheaper attachements (ie: synthetic bristles used on the dusting brush). The machine is also made on an automated assembly line in Bielefeld, Germany, which helps to cut further cost.

Other Miele's, like the former S4 and S5, and the current S6 and S8, are built to a standard and address the majority of the issues you've mentioned. The S2 isn't meant to compete with Miele's other lines; it's purpose is to compete with the "higher-end" big-box store varieties.

As for the Kenmore machines, they're better left on the shelf. As Sears continues its downward spiral, their machines have continued to be cheapened out more and more. In Canada, where canister vacuums rule the landscape, the shear amount of wire harness and lower wand issues that burn out is appalling. In fact, I am surprised they haven't been recalled...

The melting end cap issue on the brush rolls continues, though the newest have been revised to prevent build-up of debris...