I own the GHD V Sapphire Styler and I am in love with it. It straightens through my medium to fine , puffy curly hair nicely reducing it to a sleek , straight and soft state. The box it comes in is really petty and you usually can purchase the iron as part of a set with another product such as a comb to styling spray, depending on where you get it from. It can be petty expensive but will last you the best part of a decade. The styler is create to curl, wave to straighten your hair and it heats up really fast and glides through your hair magically. However it makes it alittle bit trickier to curl/wave hair because it doesn't have much grip on your hair but usually the straighteners will gain alittle more grip the longer you use them (what I found with my iv styler).
For curling, place a section of hair between the plates closest to the scalp, clamp the plates, and turn styler through 180 degrees while holding the end of the strand. Pull styler through the hair slowly, always maintaining the 180 degree turn--it helps to slightly tip the nose of the styler downward, careful not to let the hair fall out. It also helps to pull the strand forward when trying to curl hair at the back of the head.
This iron claims to heat up in 15 seconds; it also claims to use some bullshit technology that allows it to "self adjust" temperature according to hair type. Well it got warm but it sure as hell didn't heat up enough to seriously straighten or curl my hair in a mere 15 seconds--in fact, I found that it didn't ever straighten my hair enough to satisfy me.
This overpriced iron is good if you have naturally fine, soft or wavy hair. If you have coarse, thick hair it will not do the job, or it will take you several passes. This is not unique to the GHD, this applies to ALL CERAMIC straighteners. The Auto shut off and dual voltage is awesome, but it is not worth it if the iron does not provide sleek, durable straight hair. If you have kinky, unruly, poofy hair go with TItanium, hand down!!