I don't know much about James Dyson or why he polarises people the wrong way. I don't live in the UK, so I guess I don't see much news about him. That being said, I have had two Dyson vacuums and a cordless one. The first Dyson DC04 lasted over ten years. My current one (not sure which model) is larger, heavier and noisier. But it still sucks mighty fine after nearly 10 years of service. It is now relegated to garage floor and car vacuuming duties.
For domestic cleaning, we now use a Sebo Felix - which is much quieter and more manoeuvrable. I don't have any axes to grind with Dyson, nor do I have any particular brand loyalty either.