[Jack]

ESA, CMAS, Padi, etc..., its all the same diving and the same dive sites and the same dive safety and same diving equipments, you have only to choose your diving center and instructor, of course you will find a lot of more experienced instructors in Padi cause they are 40 years old and ESA is only 7 years old, but still Most of ESA instructors are originally Padi instructors, i don't want to confuse you, but at the end its all the same. about the Certification, all diving Certifications can be used world wide.

Choose the best what you see not what others people see...simply...Its all about different schools, same educations.

Cheers...