[Speedslug]

l will add that concentrators purity falls off at maximum output so you only want to push a 10 lpm machine to 9.5 lpm at most.

And even at their best, concentrators only have 95% purity and tanked oxygen is most always 98.5% or 99.8% and I am told by those that have played with both that you really can tell the difference when you work with them.

So 'You pays your dime and you takes your choices" as they say.

The nice thing is you can always use concentrators on the smaller inner flames and when / if you get a tank you can use that on the outer.

Oh and shop around. There might be another source of oxygen near by for less cost or playing one source off the other for a discount.

I know that most big box stores can get you a 5 or 10% discount just for asking a manager if they can do any better on a price.