I have very wavy and thick hair. This straightener is absolutely awesome. It has 5 different heat settings and heats up in about 10 seconds.
The plates are about 1.5" which makes it relatively fast and easy to straighten my hair (it usually takes about 15-20 minutes). The great thing about this tool is that I only have to run it through my hair once to get it perfectly smooth.
I highly recommend this straightener. I used to have a CHI (it lasted about 3 years but it recently died). I found that after a while, the CHI lost heat and didn't work as well as it once did. My hairdresser (who is one of the most fabulous people on this planet) recommended that I try the Paul Mitchell ProTools Express IonSmooth straightener...and I couldn't be happier with it!
I found that this is also a relatively fair priced straightener (I paid about $100 CDN) and it has so far been worth every penny!