"bradster"I have the great white tank as well, works great! I travel with it and leave it in the truck and refill from there. Or I'll tether it took my gun while at the range. Takes 30-45min for the scuba shop to fill it, big tank.
My bud at the Fire Dept can fill it in under 5 mins start to walking out the door. They have a HUGE compressor that fills a rack of steel bottles to 6000 that are hooked up to the fill station. They open a compartment, link your tank, close and fill. I would rather a very slow fill to prevent the tank from heating up, and then loosing 100+ psi when the tank cools. But beggars should not be too choosey.
Dodge3500
Number of fills between the two is probably close. There are fill calculators that would answer that question. Point is Travels suggestion is several hundred less than comps at the expense of an almost 2x heavier cylinder. Couple a hundred would go a long way to the next level scope. I went with a CF tank that the guys at the Fire Dept would be comfortable with. Also it fills to the pressure that THEY use. I was in the wildland fire service for about 14 years and made many contacts with these guys. Funny thing is I thought they were nuts going into a burning building and they thought I was nuts going into the woods to fight a wildfire.