Fairy wrote: Even if they quit without a job, which is very often the case, they have no problem landing another better one due to the perceived exposure they had by potential employers, particularly by the companies they had audited before. Am I planning to quit without a job? .....sigh
My advise is do not quit without a job. Even if you are rich and have enough savings to last 6 mths to one year. Why? Because human pychology is very funny. When you have a job, they want you. When you are out of job and want to join them? They scared and want to siam. When you have a job, you do not need to panic. No job, you are at their mercy and will loose some "value". When you have a job, the head-hunters come running after you. No job, you run after the head-hunters - not good.
You can actively hunt for a job if you really want to move. Quit only after you got a concrete offer.
All the best!