I do, got it second hand. I also have very thick and frizzy hair. I really like some things about the airstrait - it's very fast, straightens well, makes my hair look shiny, not too loud, not too heavy.
Bad things - I can't get even the slightest bend at the ends. I tried doing it like straighteners, with a little flick/twist, but it just got the cord twisted up and never changed my hair. So the ends of my hair just hang there like a thick curtain with blunt ends. It would be different if it weren't so thick I think, but it is. So I am still looking for some other tool to curl the ends afterwards, just to avoid that slightly witchy looking style at the ends. But otherwise, it's great in how it dries and straightens so quickly. I just wish the ends looked better. Other bad thing is how huge the plug is, but that's a safety thing for a wet-to-dry styler I think.
I was wondering about the new AirWrap. I tried the original years ago and sold it as I couldn't get used to it, but I am not sure I really tried enough or watched videos or anything. The new one looks good but so expensive and no second hand ones yet of course. It also has the huge plug! But I wonder if it would do what I want in terms of smoothing and straightening, but also have some curls in the end. (My hair is naturally curly/frizzy, but horrible on second day or even later the same day after washing, so I have to straighten/smooth it, but then it tends not to hold curls at all when I try to put them back in at the ends!).