Best vacuum for pet hair?

[IndieTara]

I need recommendations please, for once I'm in a position to buy a new vacuum and need one that's great for picking up pet hair and long human hair.
I keep eyeing the various Sharks that state anti hair wrap technology but really have no idea where to start.
My house is small, no stairs and a mix of hard floor and carpet, I also need to vacuum the sofa and chair and like a long attachment for the ceiling.
What do you all recommend?

So my Shark arrived today and it's already the best £170 I've ever spent.
However I'm disgusted at how much dust dirt And hair came out of my carpet and sofa
I filled the dust cup twice just from the living room
Who knew a vacuum cleaner could become my new best friend !

Which Shark one would people recommend for a big hairy dog and messy household?

Also does it have a decent sized space to catch the muck and hair and is it easy to open.