I have had a few .000 lights in my stock eliminator cars, but never on a car with street tires. I generally regard .000 lights as a mistake, I strive for reaction times between .010 and .020. If I am against what I consider a subpar competitor, I go for a .020 and .030 reaction time. In a high horsepower street tire car without any driver nannies, I think anything below .050 is pretty good.