80 gallon 5hp 2-stage compressor with a refrigerated air dryer is what I use, and it is ALWAYS up to the task at hand, with ZERO moisture problems running it hard. With any compressor, if you do not drain the water out of it every time you use it, the hot air vaporizes the water sitting in the bottom of the tank. Paid $1000 for the IR compressor, and another $1000 for the ZEK refrigerated air dryer, but they are both worth every penny. 2-stage compressors are a must if you want a reliable air source with pressure to spare.