Titanium straighteners are the highest quality of metal irons on the market. Titanium is preferable because it’s really light weight, and heats up very quickly. Titanium is like tourmaline in that it generates heat using negative ions, so you don’t need it to be as hot in order to keep your hair straight. Irons like this can be used at lower temperatures than older style ceramic or metal options. If you do decide to opt for titanium, bear in mind they are incredibly efficient as far as heat is concerned, so if you have hair that’s easily damaged it’s worth keeping this in mind.