1.Pick which legacy you want to work for.
2. Look into your crystal ball and see whether B6 or AS will be bought by that legacy at the next economic downturn.
3. Go to that one and suck it up for a while.
4. If you don’t care which legacy then base your decision on which imperfect choice you can most easily live with for the next ten years.
Tough call...
(Planning for more than 10 years at AS or B6 is to ignore long term industry trends)