I have minimal damage from my blowdryer - my hairstylist has told me my hair is in great shape so I'm pretty
sure I'm not deluding myself ...
I have a great dryer. I'm using a T3 for the past year or so, and prior to this I had a Babyliss Odyssey for many years. I do think it makes a difference for me, of course YMMV.
I use an Aquis, and let things dry in there for awhile while I lotion the bod, put my face on and putter around getting ready.
I only dry completely the parts that give me major heartburn .. in my case the front (the wildly curly frizzy and unfortunately, thinnest, portion of my hair). Then I headbang a few times and blow upside down, mostly the nape, the thickest part of my hair. I'm never really drying all the way, unless I have an uncontrollable urge to straighten and use my flat iron, which is pretty rare these days. I also keep the dryer as far away as I can. I have one of those dryer stands, which if I bother to use, helps me do this, but I'll admit it's usually just sitting in the corner holding up headbands and a towel or two
I use my fingers, almost never do I use a brush to dry. If I do, it's usually a giant paddle brush, low stress. And I'm the leave-in Queen. A spray and a cream, plus something coney on the very ends. Lately, I've been using nothing but Nexxus and A|G from shampoo and conditioner to leave-ins. I'm very happy with the state of my hair, even with daily blow drying.
Lordy this is long, my apologies. Hope it helps!