These are some fair critiques. I like the form of the Dyson + Heat I have (not an air filter), but more importantly, I like that it's constantly drawing in air and sampling the temperature much more accurately than a typical space heater which is basically just hoping the bi-metallic strip eventually flips the thermo off. The Dyson seems to do a really good job of holding a fairly consistent temperature, plus it looks cool.

But I got my refurbed on Woot for like, $100, not the $450 brand new they wanted, which is lunacy.