There are pros and cons to each appliance. Braces require less compliance in the sense that they are glued onto the teeth so you can't forget them at home; however, you have to avoid eating hard sticky crunchy foods and it takes more time to properly brush and floss your braces. Invisalign is a great aesthetic option which is a more comfortable way to straighten your teeth there are no dietary restrictions and brushing and flossing is easy however the aligners won't work unless you wear them 22 hours a day seven days a week.