I considered Invisalign. I decided against it after my research. You have to take the liners out and brush AND floss every time you eat anything or drink anything other than water. Too much trouble for me! Two, if they don't get the molds done exactly right the first time, they ahve to re-do them, and at my ortho you would have to pay extra for that. Three, depending on how tight th eliners are, they can be really hard to get in and out. I have short stubby fingers, and I think I'm starting to get a little arthritis in my fingers (I'm 41 YO). Knowing me, I'd get the dang thing out and couldn't get it to go back in! Four, sometimes saliva gets trapped inside the liner and you have these bubbles all in it - yuck! Not a good look.
I went with traditional braces w/ clear brackets on top and metal on the bottom. Most people don't even notice my braces. This configuration was also about $800 cheaper than Invisalign, and the treatment time would be the same. For what I'm paying, every dollar counts!