Just wanted to give a quick update. I am on tray 51 out of 57 and I couldn't be more happier with my results. I paired my treatment with acceledent and I am only 10 months in and my teeth has moved so much I can't even belive it. I just wanted to say to all the beginners- hang in there. It gets a lot easier as you move forward. I am so glad I am doing this and I got a ton of compliments today about how great my teeth looks. So, anyone contemplating invisalign, do it. I guess a lot of it depends on choosing an experienced and reputed ortho.