I would say Singapore since you would be LIVING and WORKING. 1 SGD to 3 Ringgit, I would rather you head to KL for vacation and get your money's worth partying, its only a short 1 hour flight and USD80. KL is alot alot cheaper but not as safe, clean and alot more corrupted, good luck driving around during festive seasons and not get summons as 'duit kopi' (coffee money) for the traffic police. Since you're going to be in two boring cities, you might as well choose the one that you wouldn't be bored AND robbed. Also, Singapore would be a good place to meet real rollers with potential personal development and investment opportunities for you since you're in one of the busiest international trading cities in the world.
KL would be great for shopping international brands(due to the weakening Ringgit) , picking girls from provinces and cheap food, everything that sounds like a vacation city.
KL would be great for shopping international brands(due to the weakening Ringgit) , picking girls from provinces and cheap food, everything that sounds like a vacation city.