I bet snap on air tools are not even US made. Snap on does make some really nice air tools though.
I have one of the harbor freight impact and it works great. I dont like the dial on the back to change directions, its really hard to turn. Never use the air impacts anymore, my milwaukee cordless impacts do everything I need. I did have to use the air one the other day because the cordless one was just slightly too long to get in a tight spot.
Im willing to bet snap on wont be around in the next 10-15 years. They are steady screwing people over on the "lifetime warranty". You now need a receipt for the tool you bought 30 years ago in order to get the warranty honored.
Harbor freight has a better tool line intended to compete with craftsman, husky, and most chain store brands. I still wouldnt buy it but at least its not total garbage like most of the stuff they sell is.