Well, all i can say is that I've got Ball Animal 2, bought in January and already had an appointment with Dyson guy, replaced whole cyclone and bin. He didn't argue, ordered a part without me even saying anything. Although he said that my cleaner has HEPA filter, which is not true.
My boyfriend's sister and mother also have Dysons.
Sister has got DC014 and it's still working strong, as she was telling us, customer service was always great. They were even polishing it for her.
His mother's got DC025. I must say that it doesn't seem to be very powerful, but maybe it's because I'm comparing it to mine which can really suck deep into carpet. Anyway, when it was still in warranty she was really satisfied with customer service as well.