my LWS wouldn't lease me tanks. If I had realized I could get by with a concentrator, that would have saved me $300, at least. And the last time I got acetylene, the tank was leaking, so I had to take it back. In many states, you can't legally transport acetylene in your car, and they won't deliver to a residence.

Propane/oxygen concentrator has a lot to recommend it in my view. If nothing else, going out and getting a propane tank can be done any time of the day or night, whereas the LWS has restricted hours.