Today i decided I was going to buy a ghd glide despite owning every styling tool known to woman. I have long, thick but fine (thin hairs but lots of them iyswim) hair with a loose curl. Usually dry it straight with the dyson air wrap brush but then can't get the kinks out next day.
I googled it for the best price and it also listed a dupe at Boots, the Revamp Deepform Brush.
It's £90 but £68 with the advantage card discount plus £16 in points in the current promotion. Went and bought it at lunchtime and its great. Sorted my rained-on hair out in minutes without making it flat.
Worth a look if you're hesitating about the glide.