If using tanked be sure to chain the tank to the wall to prevent it from falling over. Also add the cost of the regulator.
A 250 cu foot tank can run from $18 to $60 per fill plus tank rental if you do not own. And they are not light. First floor use only.
The overall read is that tanked is preferred by many. More psi and higher purity.
With a concentrator you are limited to either 5 psi or 9 depending on model. Plus the purity will be lower. Consider GTT torches (Cricket - Scorpion) for concentrators as they are more efficient than some other torch models. For a new venture I would suggest looking into the Cricket. It runs well on one 5 LPM 5 psi machine or great on tanked.
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