I want to get my hair straightened, but am confused whether I should go for smoothening or rebonding. Please advice

a friend of mine had gone for smoothening while another did rebonding. honestly, when i saw the effect, i felt the former was better. the thing about smoothening is that though it will make your hair look straighter and frizz-free, it will use way less chemicals and heat as compared to the rebonding process. as a result, its less damaging for your hair and also looks more natural.