Here's my input.
Whatever bulb inside the projector really doesn't matter, it's the projector design itself. I've used every bulb on the market in my H3 housing projectors, the CLEAR ones and the "ION" BLUE ones. The light output on the BLUE is really bad. The CLEAR produces somewhat better light. I given up on the candle glow-type light and retro-fitted real Phillips HID in them. The light is brighter, but it's the actual design of the reflectors within the glass, the housing, and inside. The beam pattern is too scattered. HID Bulbs, D2-S's only come in one size, regardless of your housing specifics, the difference between H3 and H4 HID bulbs is just the base where it is mounted in the housing. Lighting will not change. So this is my reasoning behind no dramatic difference between higher wattage bulbs, bigger 9006 bulbs, etc. It has to do with the cheaply made elipsoid sphere. It is significantly different to those glass spheres on Integras, S4's, and BMW's.