The Hue bridge and bulbs are a good choice if you're sure the only things you're going to want to control are lights (and even then only the types of lights that available from Philips as part of the Hue line). But if you want to do more then you're going to want a more capable multi-function hub, like SmartThings, Wink, etc. While there are quite a few devices that are WiFi based, and therefor do not need a local hub to control them, having a hub that can control them AND devices based on the popular and non-proprietary home automation protocols Zigbee and Z-Wave gives you far more options and flexibility, as well as a single central point of control for a multi-vendor automation environment.