EmQ and Emporium are just across the BTS from each other. They both have nice places to eat and lots of shopping. We usually hang out at EmQ more as they have activities for kids sometimes.
TIP: SuperRich in Emporium has some of the best rates in the area. If you need cash, instead of changing at the BTS, go to Emporium and take the escalator down to SuperRich and get better rates!