They are good if you are a new rider. As you get more flexible, you can adjust the stem. But, if you have been riding a while, you should know what you need. At least that was my experience. My first bike had an adjustable stem. Over the course of the first 3 months of riding I kept adjusting the handlebars lower and lower as I got more flexible. When I got my road bike, I new what stem angle I was comfortable with.