I’ve had both BA staff travel and easyJet staff travel over the years and if I had to pick one it would be easyJet 100%. So much more useful getting around UK and Europe for next to nothing than the odd long haul trip that you may well get left behind on. And I gather since I left things have got worse with everyone having free tickets coming out their ears, a standby is no use.
Flying the flag is novel for about a week. Don’t base your career decisions on it.