K.D.
I recently had braces as an adult. I went with traditional "railroad tracks". I know myself and the ability to remove the invisalign would just be too tempting when movement got uncomfortable. That being said, I have invisalign style retainers that I wore afterwards and now wear at night. To me they are very comfortable. You can't see them at all and they do a great job of keeping my teeth where they should be. At first I had a slight lisp with them, but that went away as I got used to them.