These are "cheap" compressors in my way of thinking. Stay away from aluminum heads. The RPM of the motors on these will run at 3450. A good compressor will have a good motor that runs at 1750 RPM, a lot less noise and the unit will last a lot longer. Spend more $ and get something that will last longer.
Here is a link to a place on the Ohio/Indiana border that makes good units. I know this is a long ways from Iowa, but check this out. http://www.eatoncompressor.com/page/page/504413.htm | 
Sanborn, coleman, Magna Force air compressors OK?
