I bought HITandRUNs......I'm going to really enjoy not renting a tank for $1.50/day next time I go in there. It'll take quite a few dewars full to pay for itself in saved rental fees, but it will.
Now I can take it with me in the Jeep and fill it up wherever I'm stuck working, when I must be away for multiple weeks at a time. I wouldn't mind sitting in a hotel room for the weekend so much if I bring my whole rig and a 30 liter tank.