Look for a dryer that adds IONS to your hair, keeps it from drying it out too much.

I agree with SilverSteak, the Karmin Salon Series hair dryer is amazing. I no longer have to use my flat iron to smooth out my hair after drying, my hair is soft, shiny and smooth after using it, love it!

I have thick hair and this dryer does the job, it dryes my hair in half of the time others do and it  also leaves my hair shiny and with lots of Volume.

I purchased it at www.beautybasicsupply.com but they have the best products check them out 

http://www.beautybasicsupply.com/Hot-Tools-Pink-Titanium-Ionic-Dryer-HPK03-p/he2drypk03.htm