I have shoulder length curly hair that I like to straighten at times. I've used dryer and straighteners for years and think my hair looks too flat with it. I tried the Babylis Big Curl but it was crap as the bristles were too soft and my hair couldn't get any traction with it. I debated getting a Dyson Airstyler but could not risk the investment incase it doesn't work.
I had seen the Revlon one on YouTube/ Facebook etc and thought I would give it a go (its cheaper on amazon) and have to say I am in love. I used my regular hairdryer to get my hair about 85% dry and then finished it off with the Revlon brush. It took me less than half an hour from start to finish and I look like I have had a proper blow dry at the hairdressers, rather than the over straightened look. Because it is so big, it doesn't as close to the roots as you would with straighteners, but it is pretty impressive.
www.boots.com/revlon-pro-collection-one-step-dryer-volumiser-10235019