If you want a professional hair straightener and you are ok with spending around $140 I would highly recommend the Karmin G3 Salon Pro, it heats up to 450f with temperature control, tourmaline ceramic plates with rounded edges which makes it great for also curling your hair. Also has a 3 year warranty. If you buy from http://HairProductsPro.com they are also giving away a free heat matt/carrying case. If you do look at other irons make sure to stay away from irons with painted plates (colored plates) these can damage your hair. You can also check reviews at http://hairstraightenersreviews.com to see their ranking of the top 10 hair straighteners. You can also check Google for reviews on Karmin. Good luck and I hope this helps.

I picked this up at Marshalls to replace my sadly dying GVP version of the Chi which while generic, still cost $50. I liked the fuchsia color and the feel of it and the nice box so I bought it yesterday and tried it after my shower this morning. This is my least favorite flat iron ever. I hate it, it works like crap on my hair. Aka make my hair a little straighter, but doesn’t make my hair more smooth or shiny. I have dry, often colored hair that is naturally really wavy and frizzy. This is not a one pass iron for my hair, not even with the temp at its highest 450 degrees. After a few passes, my hair would be straight, but SUPER frizzy.  I guess it could be worse, I could have bought it here from folica and paid $55 and have more of a hassle returning it. I picked it up from Marshalls for $30 and am going to try to take it back today. I have tried many different flat irons, including some really cheap ones from Walmart and Dollar General and this is the only one I’ve ever bothered returning. I mean not only does it not make my hair shiny or soft, or silky, it also pulled at my hair. After a few passes, there were a few strands caught by the plates. I’m just really disappointed after reading the reviews here and finding out it such an ineffective flat iron. If you want a sub-$30 iron,I still love my Jilbere de Paris Ceramix Extreme from Sallys. It gets my hair smooth and shiny and straight. The only reason I keep it as a back up is that it sometimes pulls my hair and the heat isn’t the most even. Sometimes I get heat spots. The GVP was really good, but died after less than 7 months of 1-2 times a week usage. So I’m still on the lookout for that awesome and inexpensive flat iron. The search continues.
ETA: So my hair looks so bad that when I went home for lunch, I ironed it with the Jilbere (I live less than 5 minutes from work so was at home anyway, but I usually don't do more than redo lipstick after lunch and maybe power if the shine is coming through). The more I think of this iron, the more I dislike it. I'm rapidly going from mild dislike to real hatred. Seriously don't buy it. You have been warned. continued >>