I always used gasoline, and never kerosene - primarily because it's harder to get kerosene. Right now, for example, I have no clue who sells it nearby, but I have a pretty good idea where to get gasoline :-) And I always have about 3 gal of gasoline for my garden tools, so it's easy to access.
But one thing you need to watch for, besides fire, is gasoline poisoning. It enters through skin easily. But it is an excellent solvent for car/motorcycle work, and it is cheap, and it evaporates quickly. I don't smoke, so fire was never a serious danger.
Diesel fuel.
Walmart.........10 dollars a gal.