ABH - just been reading back through the thread and realised I missed you question about Invisalign! I loved the Invisalign as I didn't need too much done but just like braces it isn't pain free as each alignment / plate is designed to move the teeth in certain positions just like braces - the beauty is if it's hurting too much you can take them out for a little break - the downside is you have to take them out to each with can be a bit embarrassing but I learnt to work around them eg take them out in the car before I went to get something to eat etc and then just pop them back in after. At the end of treatment My teeth looked great and I still wear them most nights to make sure my teeth stay in place but I think it's better then having wired in you mouth! They can also be more expensive then braces but I found the are cheaper through a normal dentist then an orthedontist! Hope that answers your question, sorry for late reply!