It's quiet, has an actual thermostat (instead of the 0-10 knob). No burning smell and hot air temperature isn't a fire hazard (great for clumsy kids).
Best of all, it looks nice.
That said, I don't think I'd be willing to pay upwards of $600 for one. (I got a refurb HP02 for <$200, and would buy another one at that price in an instant.)