I just got the Cortex, at the mall, at a good price like half off. After reading reviews it's about the same in lasting power as the CHI and very similar results. I've read that the sedu is jsut over all better in performance and lasting power. I don't regret my purchase since a sedu is way more expensive than I can afford right now and not to mention my warranty with the store is for 2 years and I can replace as many times as I want as long as I keep the reciept. Now I know to get the sedu but I'll probably get that when this iron is long gone. I still recommend the Cortex, it's good, cheaper than CHI but pretty much the same.