All depends on where you want to grow old, and if the company has good retirement benefits and so on. WF is one of those good companies to grow old and retire with. Have no idea about DY retirement package.
Another way of looking at it is; who offers best job security now that the economy is a bit wobbly?
Anyway, it`s a good idea to do some research before deciding, but don`t make a deciscion entirely upon flying a jet or not
because there`s a lot more to it than that.