I have fine, wavy hair, and I wear it that way (I don't straighten except for once in a blue moon). I occasionally diffuse, but not often, preferring to air dry. Like Jenn, I put clips in my hair to give it some root lift before air drying.
I don't use the Deva products, but I have heard that people either really love them or really hate them--so there's no way except to try them out. I would recommend the forum naturallycurly.com, which has a lot of discussions like this.
For products, I use Oribe Cleansing Cream and Griffin Remedy Volumizing Shampoo to cleanse my hair (both have quite a bit of protein), and I follow with whatever conditioner I feel like at the moment. The conditioners I use most often are Aubrey GPB, Griffin Remedy Volumizing, Andalou Naturals Lavender and Biotin, Mineral Fusion Volumizing, Waleda Oat Replenishing, and Mineral Fusion Curl Care. The first four conditioners I listed have protein high up on the ingredients list, which helps me feel like my hair has a little more structure. (As a side note, I have a lot of chemical sensitivities, so most of the products I use are low on synthetic ingredients.)
For styling, I use Intelligent Nutrients Curly Hair Serum followed by a little bit of Intelligent Nutrients Styling Pomade. I use the pomade to help seal my hair from the humidity, as my hair can get pretty frizzy. Then I put on some InnerSense Whipped Creme Texturizer and a hard-hold gel, usually Max Green Alchemy Sculpting Gel. The Max Green gel gives a good gel cast to help lock in your waves, but it doesn't add a lot of weight to the hair. I personally prefer something a little weightier (otherwise my hair seems to fly around), so I am experimenting with different gels.
Sorry for the long post! If you haven't been to naturallycurly.com, I highly recommend it. It is the only other forum besides YLF that I check daily.
