One of the place's I used to work at, got suckered into buying a gasoline setup, it was nothing but headaches. If the gas sat for more then a couple days it just would gum up the torch and wouldn't cut right, even at the best of times it was a pain.
The shop literally spent months working with the manufacturer, and nearly $10k trying to get it to be reliable, in the end it was thrown in the trash, and they went back to acetylene / propane. Acetylene cuts faster as it is a hotter flame, doesn't take as much preheat to get it to the cutting part as well. Propane is a lot cheaper to run. So on same day rush jobs we used acetylene, on pieces especially thick ones we would use propane. One caveat is that this was all on a cnc burn table, none of this was free hand. In that shop all free hand was done by plasma, or oxy-acetylene.