Having some firsthand knowledge as well as reports from friends regarding Flight Schools in Greece, I'd steer clear of all of them, though exceptions to this rule do apply, Spain or Portugal seem like a better choice.
If no other choice is available Egnatia though increasing in Size is on a downward spiral regarding customer support and services. The bigger a school gets the less of a #### it gives about its students, and Egnatia is a prime example of this, for anybody falling victim to those guys, may god have mercy on their souls