There's one more thing that you have to think about...FO's are PF only on category A airports that means not flying 95% of the outbound legs of the 320 network.If you are low houred that's ok but if you have experience and you are willing to keep learning it could be an issue.Fo's cannot start the engines,taxi the aircraft and fly to more interesting airports...I find it insulting but rules are rules.Other than that working environment is excellent really good people to fly and work with everywhere