I'm old and retired. but the same rules applied 30 years ago, unless you have compelling reasons not to, BA is the only logical choice. If you don't like it, it is a lot easier to 'step downwards' in 10years or so. I have a friend work for EF and he works hard at the bottom of the seniority list.
From peeps I know still working VS isn't the silly fun it once was, but a worthy alternative if LH is your ultimate lifestyle choice. Remember it might not be when your social life is different.
Norse is probably the most fun, but will give you sleepless nights unless you want to be one of the many non-conformist pilots changing jobs every few years. You'd need to get a command here for any sense of security.