I hear ya..... i also have stick straight FLAT asian hair.... i use a cheapie dryer from revlon
Amazon.com: Revlon RV484 Ion 1875-Watt Hair... ive had it for a few years and it still works great! But i also do not blow dry my hair everyday. Only when im going out to party lol.... Im sure the expensive $100+ dryers do work better but for the cost, i like this one. I got it at target and i believe they still have it there.
As far as volumizers..... gosh i wish i knew.... ive tried about every product out there and still have not found anything....

if anyone else has any suggestions, i would love to hear!
The only that works is blow drying my hair with my head up side down. But by the time i leave the house, its flat again lol.......