I preferr using a light, too. Get one with a xenon bulb and seeing it won't be a problem. Most of the timing lights available now have xenon bulbs anyway, so even an inexpensive one will do. Personally, I have one that has an advance knob on it (Matco), as my engine does not have a vacuum advance on it an needs extra base timing to run happy. I'm not saying that there's anything wrong with other methods, I just feel that using a light is more accurate.