MBA as a full time employee

Been doing some casual searching on the value of getting an MBA and the general consensus is that if you're not going to do it at a top uni, might as well not do it at all. How would you suggest even considering some of the top unis abroad (I'm guessing Malaysian unis don't exactly fall into the "top unis" category) while working full time in Malaysia? Are the only options to give up on going to a prestigious uni or quit your local job and spend 2 years studying abroad?