PowerIQ Tourmaline from Sally's. It runs about $35, but I got it on sale for $28.00. I've been using it for about a year and I LOVE it. No major damage and gets my hair sleek and shiny with one pass. I used to be a total flat iron snob- I'd only use expensive ones, but this one made me a believer.
I wouldn't recommend using a flat iron on wet or damp hair- despite what the product says, it's so damaging.
3a on top and sides/3b underneath...lots of hair
My HG: Sabino Lok & Blok