Ohhh too many.
I have an ancient GHD straightener which I can do curls with and is still going strong.
I also have a Cloud Nine iron which works well too.
In the wand department I have two, a Babyliss Pro plus a GHD Curve. The Babyliss takes forever to heat up but does last well, though I need to do it a few hours before going anywhere as I look like Curly Sue till it drops The GHD wand heats up in about two seconds and gives a great result straight away, though it is too big/fat for me I think, the curls look perfect straight after but they drop out too much after a few hours.