First of all, the issue of salary A is currently winning look at the prospects of B you think there is much room for improvement, but there is a saying that jumping ship poor 1 year to switch to poor 3 years Although your business is strong, but not necessarily a change of line of business in B companies are also strong, so your ability may be A you are a minimum of managerial status to do 3 years B did 3 years maybe just a little success, but it should be very difficult to exceed the status of the company A. The company A is relatively important (in terms of the importance of the company A), but the company B is also very important to you. The degree of importance of A relative importance (from your description, but some companies are also fooling people, said we wait for you how to how but go to the idle son to throw it there However, you engaged in food and beverage manager for many years should have a clearer vision) and finally is that you agreed to go to A to apply for the job, although the time in January after the go. But after all, you agreed. My personal philosophy is to try not to go back on a promise. The compromise is to go to A first look at not sign too long not suitable before jumping ship personal opinion.