I prefer not to assume you have done all research possible
You should look into the worse stories you have read or heard about and make notes and ask the doctor---asll possible bad things. If these doctors have flashy offices and a hot "advisor", beware.
I also read that if you do have some hair still left on your head, these may fall due to the schock of the procedure and are not guaranteed to grow back
Why have you narrowed to these 2 doctors?
I have heard this also: dont expect results with your hair looking lile when you were 15. Have modest expectations. This aint no boob job.