Here is an in-depth tool comparison between a snap-on Impact, and a Harbor freight Impact.
http://mwsc.speedsociety.com/impact-wrench-comparison-snap-on-vs-harbor-freight/?source=murder
was rummaging around the m109riders message boards and ran across a thread with this link in it. It really seems that it would be a good investment to me. http://www.wbaltv.com/news/14328936/detail.html
