Chi is a great brand. There are other ones out there as well that are good. I am a fan of ceramic flat irons, and ones that you can change the temperature on.

There is a professional one that will dry and flat iron your hair at the same time, but the problem with that is it can damage your hair much easier. If you want I can look the next time I'm at the supply store and see which one it is and how much it would cost you. (I do get a professional discount, but if I bought it and sent it to you, I'm not sure if it would save you any money with added shipping. I am happy to look into it for you though.)