I believe that at one time I had one of the same type everybody is recommending. After about 20 years though it started leaking and I had to toss it. Somehow propane leak and torch didn't seem like a good combination.The auto ignition ones work well overall but a couple things. 1 - It won't want to light until the gas is all the way open or nearly so. You try to light it at partial flow and it probably won't work or it will just blip a little. and 2 - I have seen where the spark tip is not sitting in a good spot to make the spark and light the mixture, so it can help to tweak it a little until you find a spot that lights well. Don't go crazy, but if it is not lighting reliably try tweaking it.