I did Invisalign. I highly recommend it. My mom couldn't afford to get me braces when I was growing up and I had always been very self-conscious about my smile. My dentist talked to me about it everytime I went to get a cleaning because my cleanings would take so long because my teeth were crowded. I thought I couldn't afford it but we negotiated a good price and and a payment plan that included the $2000 that my dental insurance would contribute. I had it for 18 months (12 months was the initial plan and then I did a refinement that lasted 6 months). If you aren't pleased with the first result they will do refinement periods for you at no additional cost until you are happy.
Toward the end I got tired of having to brush and floss after ever meal or snack but it lead to improvement of my overall oral health. The results were fantastic. One of the best things I have ever done for myself.
If you're going to do it don't be shy about negotiating.
Updated On: 7/9/12 at 10:53 AM