I've got a Miele UniQ.. I'm not saying that the Miele doesn't maneuvar nicely - it does.. It's just that a canister is trailing me wherever I go. I'm very careful with it as I don't want it banging into the walls and furniture - Less worried about marking up the baseboard and more worried about putting a mark on the vacuum 
The beauty of the HAH is that you can pull out the amount of hose you need, go about your work, and then retract it easily - no need to worry about banging the canister into anything and then finding a home for it when you're done cleaning.
These of course are very small issues, basically a matter of preference for a specific vacuum type.. Everyone has their own. I've owned several Mieles and loved them all (except for my Silver Moon when I had to replace the hose with the "new" version which didn't have a swivel end). I've also had central vacs - with turbo nozzles and a low voltage hose, with a Lindhaus nozzle and a line voltage hose, and then the Hide a Hose. Since I've got mostly hardwood and area rugs, I can deal with a turbo nozzle again.. Having had a Hide a Hose, it's hard to go back to anything else, but again it's just a personal preference and it's different for everyone. I love my UniQ and am not ready to give it up, it's a beautiful vacuum.. I just have a feeling that one day I'll wind up putting in a central with HAH.
On a side note, they have new style valves which are redesigned and are much smaller than the original.
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