Below are our favorite hair straighteners and flat irons. Many of these were choosen as our favorites due to their adjustable temperature controls (many reach 450 degrees), swivel cords, longer than usual warranties (check out Karmin Flat Irons - 3 year warranty and Hotness Hair Straighteners - 4 year warranty). We have personally tried all of these flat irons and these are by far the best at straightening, the best value, the best warranties and the best prices which is why they made our top 10 hair straighteners list.