I need an air compressor to primarily drive a sand blaster (siphon feed) to take old paint off a truck. Do you know of any air compressor comparison evaluation? Or any suggestions on buying the right air compressor for the job? I will also use the air compressor in my home garage for things like spray painting and driving air tools like impact wrenches and sanders. I already know that I will need to meet the cfm rating for the sandblaster but I need more information about things like cast iron, oil vs oil-less, teflon coated pump cylinders, etc.