I’m impressed with Dyson’s customer service. We’ve got a Dyson handheld, which is fantastic — it does a much better job than any of the other handheld vacuum cleaners we’ve had before, and has the added benefit of begin really easy to clean. There are two filters (as well as the usual Dyson cyclonic system) and both are washable.
The only issue we’ve had is that it’s recently started losing charge much more rapidly than usual. One call to Dyson later, and we’ve got a new battery. No hassle at all.