I've never gotten my hair very straight with the Maxiglide. I've used it less than 10 times probably but I've had it about 2 years. I'm sure its possible, but when I was using the HAI, my hair came out much straighter. Some people think the HAI is comparable to the Chi, which a lot of folks think is the best one. I've never tried the Chi but next time I buy an iron, that will probably be the one I get. I will say that I think the Maxiglide is better for your (gy) hair IMO. I'm going to try setting my hair in curlformers before I straighten next time. I think that might help. In the past I've blown it dry without using a comb or brush so I'm basically working with a huge fuzzball when I do this lol.