If you fancy money, prostitutes and do not care about living in a dictatorship you choose EK. If you are British and aspire any form of family life you choose BA. if you are a European, and you do not wish to live in a 2nd world class system you don’t go to either of them.
All jokes aside: do your 5 years in EK, get ur command, and then enjoy a far inferior package at RYR or Norwegian in a base you do not fancy or you just do the time in BA / Virgin / AF / KLM / Luftie / Ezy etc and go part time and enjoy life.