Power Tank is the only way to go, after doing my research if you want more info PM me.
This is what i have as well. About half the price of the power tank. I have used it many times to fillup my swampers. No freezing up on me.The Source Co2 tanks seem to be pretty good for an alternative to Power Tanks. I have had it for a few month already and seems to be working fine for what I use it for(filling tires). Those are the same ones that Demello sells.:bigthumb: