The Biggest Issue with Philips hue as one mf my colleagues found out is that when you have a power cut all the lights come back turned on at full brightness. Brief power cuts of 3-4 seconds are fairly common in the UK especially at night. In this case he was woken up in the early hours with all his kids screaming and every light in the house stuck on until the router and Hue bridge etc had come to life so he could turn them all off again. This doesn't happen with the C4 lighting as it just goes back to its previous state. this is what put me off Philips hue even for a few standard lamps I went with Lutron Inline dimmers instead.