I'm happy with my SilverStar's. $75 for low beams and fogs. Get 'em at Wal-Mart.

I hesitate to go with higher wattage bulbs, since I don't know the wire gauge of the XF headlight wires, and going too high on bulb wattage >could< "smoke" the factory wiring. Headlights and fogs stock are 55W bulbs, 70W's are probably safe, but some of the higher draw bulbs I just don't know yet.

If I step up to something else, it'll be to true HID's. They only use the stock bulb wires to send the "turn on" signal to the ballasts. Then it's just a matter of picking a color temperature. I don't want to go TOO blue, so my initial thoughts are that anything above 8000K is prolly not for me. I'm trying to borrow a light meter from work (last I checked it was out for annual calibration) to measure the factory bulb color temp, my SilverStar's, and my wife's Murano (those HID's look just right to me). Then see if I can track down a Pacifica, maybe a Z, and some others and get color temps from those too for comarison.