380 rosters are pretty good now. Keep in mind that EK will fly you 90+ hours a month if they can. So good rosters now can easily change to busy/crap rosters by the time you get through everything.
The 777 used to be the fleet to be on, now its the 380. With 777x and 350's, who knows what will happen?
Come to EK, but don't do it based on the fact you will have good rosters because there is no guarantee.