Hi,
This probably isn't exactly the answer you are looking for....... but, I purchased a more expensive blow dryer ($90) about a year ago and it was one of the best investments I made. The kind I got is an Elchim. My hair is so much smoother and it dries faster. I can totally tell the difference when using cheaper blow dryers. The gym I belong to has blow dryers in the locker room for members to use. I forgot to bring mine one day and had to use one from the locker room. My hair was so much more frizzy. I used the same brush and products, so it had to be the dryer.
I'm sure there are good cheaper blow dryers out there, but I just haven't found one.