The claim that the Airwrap styles hair with "no heat damage" is pivotal to its success. No more crunchy ends, just shiny, styled hair, with less effort. Dyson utlimately says that since the Airwrap doesn't exceed 150°C it is gentler on your hair, and while that is true for some, for others its not.
All hair is different, and all hair can handle different styling temperatures. Fine and damaged hair needs lower heat to stay healthy, while thick, curly, or coarse hair can handle much higher temperatures. For some hair types, 150°C is already too hot, but for others it may not be able to manipulate the hair follicle.
You may not know exactly what your hair needs, so it pays to look for an Airwrap dupe with a wide temperature range. If you've got thick hair, look for a top temp close to that 150°C mark, while if it's thin you'll want to widdle that back. We recommend the Baseau 5-in-1 for thick hair. Its temperatures range from 61°C-140°C, which makes it the closest match to the Dyson, and safe to use without fearing damage. Alternatively for thin or damaged hair the Bondi Boost Everlast is the way to go. It maxes out at 80°C and goes as low as 50°C - that is just about the same range as the Dyson Nural Supersonic which also holds the same "no heat damage" claim.