Yeah they're fine, and nice machines, they are good but for a rough consumer, no. A DC14 and DC07 (late) can handle rough use and can be bashed around and are often in one piece. They are the machines that last for a good few years without any major parts needing replaced. Maybe the odd belt change but that's it really. Even people go through the same belt after a few years anyway.
Next door's DC33 brush slows down VERY much and it's only 5 years old. Well it did, I had to change one of the belts the (motor to clutch one)