On the other hand, I don't like incandescents. Hot, dim, and a yellow/orange cast on everything, tend to burn out at the worst possible time. I far prefer LEDs, especially with an LED OCD board to simulate light the light fade effect of incandescent bulbs.
In fact, I was confused by the whole thread for the first few posts - I always thought that in pinball, ghosting referred to a bulb in the lamp matrix getting some bleedover power, causing it to illuminate dimly. I couldn't figure out what that would have to do with the clear...