Yes, burr coffee grinders are better than blade coffee grinders. Burr grinders are consistent and effective. Coffee professionals will always maintain that burr is superior to blade.  Burr grinders are also more durable and offer a wide range of grind possibilities for different brewing methods.  Blade grinders offer no control or uniformity. They are useful if you stick to filtered coffee and are not concerned about consistency or flavor quality. Otherwise, they make excellent spice or flour grinders.