I have very tight curls and it usually takes forever to blow dry my hair straight. (At least 1hr and half)
However, I have found a great solution!
Its the Nexxus "Sleek n Style" brush. It's a ceramic brush with tourmaline and negative ions to give the hair shine. You use this brush the same way you would a flat iron. However, it has slits on both sides where you are to face the blow dryer so the heat can penetrate through the brush to your hair.
The end result is bone straight and shiny hair. The best part was that I blew dry my hair in 45 minutes!