If you are constantly doing burning day in and day out. You need to go bulk. Pour a concrete pad put in a big tank get some manifolds made for it. Go big or go home. There is no point in killing your profit having a whole bunch of tanks sitting around bleeding off product which results in change falling out of your pocket every time you hear it blow off. The happiest person right now you deal with is your oxygen company because you are making them a killing. A bulk tank wont bleed off if used properly and regularly. No product lost means no money lost. You are probably also using 100 pound propanes or 435 propanes which you are paying labor on top of gas for each one of them you have to be filled. A 500 gallon tank will save you a ton of money. Once a month delivery versus's probably once a week delivery is three less trips a month the bigger you go the more you save. Are you locked into a contract with your gas supplier or is it just a verbal agreement? How many tons a month on average are you cutting? How many tons of torch material do you have on the ground right now if you were to estimate? See a simple argument can turn into you saving money lol. Cut your costs at all costs has always been my motto.