The digital temperature is adjustable up to 450 degrees which allows you to customize based on your hair type. It straightens or curls a full head of hair in less time than our other flat iron. My daughter's been very happy with it. Overstock's price is great as usual. It's definitely a comparable alternative to the Instyler. As with any high temperature appliance, make sure you use some sort of hair protective spray. The Chi thermal treatment has worked great for us.