I have thin, fine wavy-curly hair that is hard to straighten, and easy to damage. I was looking for a dryer that would decrease my damage and be healthier on my hair, came with a diffuser, had a cool shot button I didn't have to constantly hold down, and that worked well with curly hair for diffusing but could straighten really good as well.
This dryer is really high powered- I have no idea what the previous reviewer was talking about when they said it doesn't get hot enough. It really does take less time to dry. I love the fact that this dryer has a cool shot button that you do not need to constantly press to get cool air- there is also an option next to the warm and hot settings to have it be on cool air despite also having a cool shot button all you have to do is click- which is extremely hard to find in dryers, even professional ones. Definitely quieter than a drug store dryer, and quieter than any other professional dryer that's been used on me in the past at salons (like babyliss, salano, rusk speed freak, etc).
I have used three settings for straightening to see what works best- hot/high speed, hot/low speed, warm/high speed, and warm/low speed- and I am shocked! Because with the warm heat setting on low power, my hair was straighter with blow drying than any other time I've been to the salon and they did it on high heat and high speed! It felt much less fried that usual, and I had no triangle frizzy mess after blow drying- I could have walked out the door with that hair it was so straight, shiny, soft, and flowy! The high heat settings work great as well, but I think being able to get away with the lower heat over all would be less damaging. This is coming from someone who's ALWAYS had to use the highest heat and power setting to get results. Other professional dryers have not been able to achieve this feat- so I definitely place this dryer at the top of the list for effective dryers!
For curly styling, the diffuser bowl works great- the placement of the holes as well as the power of the machine allow for great curls, but won't blow your hair around and cause needless frizz that can happen with diffusers that have too many holes or holes that are too big. Still a fast drying time. My wurls are left shinier than usual- so I know it's the blow dryer, not the products.
Over all, I really feel this was worth the price. I wasn't going to go for a dryer in this price range, but after several curlies recommending this and sick of frying my hair I'm trying to grow out desperately with a cheapo drug store dryer and not being convinced my stylists' dryers would be any better, I'm really glad I went with this beautiful machine. And what's amazing, is my hair LOOKS and FEELS healthier using this machine.