Don't laugh, but I am just now buying a hair dryer for the first time

, and I wanted to know if there are any brands/types I should avoid, or any really good ones that people recommend. I have short hair, if that matters, and don't want to spend more than $40 or so.
My hairdresser is helping me transition into a longer cut, but she told me it's time to bite the bullet & get a dryer so that I can keep some volume as my hair gets longer. She didn't believe I'd gone for 26 years without a dryer!