Has the perfect heat so that it doesn't get my hair. I've used a chi for years but this is by far better. No breakage and not as many fly aways and I have very frizzy damaged hair.
In summary, you will want to buy a hair brush straightener that has a lower temp range, from about 250-300° (any temps higher than that and you are likely to damage your hair – start at the lowest temp possible and work up if needed). You will also want to consider a ceramic model they will heat evenly and a bit more slowly and will not create hot spots which can damage fine hair.
bought for my wife.she says ghd are the best