I had one 5 years ago at Mayo in Arizona. They are intense and can leave a lasting impression with you. The staff are fantastic and it takes a special type of person to work there. I went it with a different attitude about them then I have now but it did get a lot of information that is helpful for diagnosis and directions on where to go with treatment. My way of looking at it is an EEG you get at an office is a snapshot, but spending 5 days hooked to a monitor can give you so much more. It's in a controlled environment with equipment that can save you and also diagnose you to build a better treatment plan. I do recommend them but be prepared for an intense 5 days and also bring stuff to do since you will be spending a lot of time with bed alarms and such.