Where can I get a dangerously powerful vacuum cleaner?

[Bennet]

I've had enough of domestic vacuum cleaners. I've tried everything from Dyson downward. I'm bored of mediocre suction.

Where do I go from here? I've looked at websites selling commercial/industrial ones, but they all seem to be geared at large capacity or excellent durability. I don't care much about capacity, and I'm not planning to throw it down the stairs. I just want to be able to clean the dog hair out of my carpets.

So if I want something siginificantly more powerful than a normal domestic vacuum cleaner, but that can still realistically be used in a house, what should I buy?

All suggestions welcome (both sensible and idiotic).