I have 9 bulbs total: 6 white, 2 white ambiance, and 1 color. I never really use the colors or even the different temperatures of the ambiance bulbs, but then again I've only had my system for a month. But my favorite features of Hue are voice control, phone control, automation, and dimming, and you still get all of that with the white bulbs. The colors are cool to play with every once in a while, but do people really like their house to look like a night club all the time? If the price difference was only like $10, I might get all color bulbs just in case, but $15 vs $50 is a pretty huge difference.