Numatic Henry or Hetty or Harry - don't have one, but seen so many office cleaners using them they must be good
I have only had one of these since around 1986 and its had a service (costing £14) and its epic. I have no idea how long they live for though. I have 4 dogs and it sorts out the pet hair really well. When I bought it I had a German Shepherd and we all know that they are world class shedders.
If 'Henry' died I would have another in a heartbeat. I feel that its not about to die any time soon though.
Had a dyson once. I had it for 2 days and took it back to the shop and got a refund as it was more pants than an underwear drawer. Total rubbish and I would never have another one, even if my life depended on it. The marketing is fantastic, the reality is somewhat different. It blocked, blocked again and then blocked some more. Definitely not designed for a GSD owner.