What is it about the airwrap?

I have fine hair in a chin-length bob. I tried my friend's airwrap and was amazed at the incredible blow-dry. I think it must be the round brush accessory as I have never been able to achieve such a smooth but full effect. It looked like I'd been to a salon!

However I don't need the other styling things which come with the Airwrap so I'm wondering if I can get something similar which does the same job as the round brush accessory. I've tried a Revlon hot brush but that was far too hot. I'm also trialling Zuvilife Halo which is lovely BUT doesn't have the round brush so so I don't think the effect is as good. Does anyone have any recommendations please? I'm in the UK.