In the bad old days pre-GHD I used Remington straighteners and it would take me an hour to do my long fine yet wavy hair - and even then I would be left with a bit of a frizz bomb.
GHD's are a million times better than this - it only takes me 10 - 15 minutes to do my hair! However there is still the odd kink and bits of frizz, it never ends up as sleek as my hairdresser can get it - even when I used GHD branded hair product.
Despite this I think they're pretty darn fabulous - I wouldn't go back to the Remmies that's for sure!
I don't know how I lived without my GHD. I use to have a Remington but there is just no comparison. My hair is extremely thick and curly and I love to have it straightened, I only wash my hair twice or sometimes only once a week and let my hair dry naturally then its the magic touch of my GHD. It only takes me about 30mins on a good day but I have had neck surgery so as you can imagine it is very hard for me to look up/down, sideways everything a neck is supposed to do I'm a tad different lol so 30mins I think is awsome. I still get frizz but that I believe is the products you use. I am extremely happy with the ability of the GHD to straighten my hair, everyday I just need to run through my hair without having to devide it up into sections and that takes about 5mins to get the look I want. I watched the tutorial on BR "How to curl with GHD "but a little sore on the neck so will have to wait to try that. I don't know all the techno details of my GHD but I really don't care, it just does a fantastic job, effortless and easy. It is one of the items that I would grab if there was a disaster. I have had a few burnt tips of my ears but would never blame my GHD lol