Against the ghd IV Styler: Although the IV Styler is one of the original products in the ghd range, it’s still pretty beloved amongst customers, especially because of its affordable price. Unlike the new ghd Gold Professional Styler, though, this product only boasts one sensor that stretches across both plates, meaning it’s less intuitive at heating your hair.
I worked in the hair industry for a while so I've used a lot of high end flat irons and I got to say, this one did not impress me at all. I'd never used a GHD before this btw (none of the stylists I know have one) but I ended up ordering the GHD classic styler--which btw seems to be the same as the "IV styler"--instead of the CHI Turbo due to the fact that at the time, the GHD was on sale and basically the same price yet it offered more versatility (the turbo has a velvet cover so you can't use it to curl).
Inferior hair straighteners take a very long time to heat, and you really need to make sure that they’re on their highest setting to have any effect. But that means getting lots of split ends, and you hair often looks frizzy, dry, and generally unhealthy. And once you go outside, if ever you live in an area that’s a bit humid the straight hair quickly goes to its default pouf settings.
I'm absolutely in love with my GHD.I will never buy another brand again. It heats up super quick, glides through the hair like silk and takes alot less time as with previous straightners i've had to go over the same strand a few times and it left my hair frizzy/flyaway and meant i had to use products to smooth it down! I dont really need to use any products except hot iron spray or cream protectant and a tiny amount of serum afterwards. The GHD also curls my hair perfectly, now that ive mastered the technique ;-)
For me, the first and still very best of all ceramic stylers [and my dad is a hairdresser too]. It heats up fast, cools down relatively fast, works wonderfully and lasts a long time. In 11 years, I've bought two such stylers. The first one eventually died after 6 years of daily use, rarely skipping a day, while my second one is still going strong. I have no reason to recommend any other styler but this one. My hair is long and very fine.