If you really want to become a Commercial Pilot and you want to live in the comfort of your zone its goning to take you a long time to get into any major airlines. if you get the cadetshship by etihad you know in 3 years or less you will be flying one of those big jets, then if you begin with trainee school where u will start of literally from scratch and flying for major ailrines will take you ages .. coz if u see the requirements for first officers for big jets u need no less than atleast 1500 hrs (not sure of etihad requiremnts - but i am sure it would be around that much). So my personal opinion would be to try for etihad.