i got a powertank,and i really like it despite paying $350 for it.it will pay for it self in time.running power tools off it is really nice.fills my 36" tires from 8lbs.to 28lbs in 30 seconds with the stock hose.much better than my ARB compresser.It only cost's me $15 bucks to refill at the local paintball shop.
And after wheeling all my freinds want to use it which pays for my refills.
And i can refill all 4 tires about 5 times before it needs to be refilled.