I have the Dyson animal and I love it. Great suction and I like not having to buy bags all the time.
I have two dogs and two African Grey birds with lots of feathers and the Dyson handles it all without an issue.
I have had the Dyson for 8 years without a problem. If it ever needs replacing I would get another Dyson.
I have tried too many other vacuums and they didn't handle all the feathers and fur worth a hoot.