I received an AVANTI Mini Travel Hairdryer as a gift from my mother when I was younger. Although this is a travel hairdryer, I've been using this daily for the past five years since it's the only one I've owned up until my latest purchase.
 
It usually takes me 20-40 minutes to dry my hair, depending on the length. I have fairly thick hair, and the slowest area to dry tends to be the back. There are two speeds, high and low, as well as a cool shot button. I don't like the cool shot button because I find there's too much resistance which hurts my thumb after a while. Also, the nozzle on the hairdryer easily falls off when touched. Fortunately, I do love how space conscious the design is because I can fold the handle down and it will easily fit into a purse/bag.

PRODUCT INFORMATION: Avanti AVTRAV mini travel dryer gives out 1600 Watts of hot and powerful airflow. Dual Voltage so it can be used around the world and ultra light and small enough and foldable you can fit it in your purse.
* Ultra-light, compact, hot
* Perfect for travel
* Pocket size
* Folding handle
* 2 speed/heat integrated switch plus cool shot button
* Dual voltage
* One-year limited warranty