I have this Andis which I got like 3-4 years ago for like $30, although now Amazon has it listed for $16! And it's really good!

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http://www.amazon.com/Andis-67095-1-Inch-Ceramic-Clamp/dp/B0009XH6SC/ref=sr_1_1?ie=UTF8&qid=1302501347&sr=8-1

I have naturally mostly straight hair to begin with, but this gets out all kinks and frizzy bits and everything and leaves it stright, soft and shiny! It's really good. Even if you don't love it... you're not out much money at all!