4 stars as it does the trick, not 5 for size and some hold backs.
Pretty easy to use, must hold power button for a couple of seconds.  It heats up rather quick and does the trick to straighten out kinks.  Only works on dry hair.  It's a bit bulky and the nubs on the end of the bristles makes it hard to do a brush through.  Also if you are looking to straighten hard to reach roots, this won't do the trick.  I like it to maintain already straightened hair.  I blow dry and use this thereafter.  I have dry, wavy hair that easily frizzes with any moisture.
Rating: 4 stars