I have been doing some research lately and in my opinion Belgium is the way to go when in comes to FUE hair transplantation.
Over the last months I visited three clinics : Feriduni, Medikemos and Prohairclinic (just recently).
All are great addresses, but personally I got most information from Prohairclinic. When I was waiting for my consult there was another guy sitting next to me. He told me he was just visiting to show the end result. To be honest I never thought he had a hair transplant, it looked absolutely natural.
Good luck with your decision