None, sorry, I’ve never tried one. It does look marginally better though from what I’ve seen. I think the Dysons downfall is ironically one of its selling points - it doesn’t get hot enough. It’s hot enough to dry your hair without damage, but not enough to make it hold a curl. And apparently the shark one does use more heat. So I’d say give it a go! If your friend is looking for something to curl with I’d highly recommend getting a Parlux hairdryer to get a good smooth blow dry and then a Remington straightener like the Shine Therapy advanced. My last set of Remington straighteners lasted about 15 years. I got new ones last year and they’re the same excellent quality. I’ve tried all sorts of more expensive ones and those are just as good if not better. I can get a full head of lovely bouncy curls that lasts until I next wash my hair with very minimal heat damage. None if I use a good heat protectant (shout out to the tres emme one) You can seriously achieve any style with those 2 tools. Straight and smooth, beachy waves, curls, bouncy blow out. No need for faddy trendy products.