If you want a professional straightener and you are ok with spending around $140 I would highly recommend the Karmin G3 Salon Pro, it heats up to 450f, tourmaline ceramic plates with rounded edges which makes it great for also curling your hair. 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 buy from My Hair Styling Tools or Hair Products Pro. Good luck and I hope this helps.